# When It Hits the Fan/Specific Calamities

Calamity. From the Latin clāmāre (“to shout, proclaim, declare, cry out”); Latin calamitās (“loss, damage; disaster”). Most calamities resonate across time and are historic facts. But a calamity prediction is a shout to action as to avoid a future disaster. The root of the word disaster ("bad star" in Greek) comes from an astrological idea that when the stars are in a bad position a bad event will happen.
In the vast expanse of our universe, humans occupy a peculiar position—caught between the enormity of cosmic forces and the fragility of our existence. This duality is nowhere more evident than in our perception of calamitous events. Any disaster is a tragedy born out of a natural occurrence or human-made activity. Increasingly they have in origin of a human-made hazard that negatively affects society or environment. Such events, whether natural disasters like earthquakes and hurricanes, or man-made catastrophes such as nuclear explosions and pandemics, challenge our understanding of scale and impact. They force us to confront the limits of human comprehension and resilience, pushing against the boundaries of what we can perceive and understand within our finite cognitive capacities.
In contemporary academia, disasters are seen as the consequence of inappropriately managed risk. These risks are the product of hazards and vulnerability. Hazards that strike in areas with low vulnerability are not considered a disaster, as is the case in uninhabited regions.
Developing countries suffer the greatest costs when a disaster hits – more than 95 percent of all deaths caused by disasters occur in developing countries, and losses due to natural disasters are 20 times greater (as a percentage of GDP) in developing countries than in industrialized countries.
A disaster can be defined as any tragic event that involves at least one victim of circumstance, such as an accident, fire, terrorist attack, or explosion.
There are plenty of reasons to be worried, but chances are that you will never experience any of these calamities, the best way of avoiding such events (or survive them) is ultimately simple be aware of the possibility and informed. Things like our solar system being "eaten" by a black hole or galactic collisions (that will certainly happen), haven't been put on the list because probability that they will affect you is 0 or very near.
The Challenge of Scale
The sheer magnitude of these events often exceeds the human capacity to grasp their full extent. Earthquakes, for instance, can span hundreds of kilometers, affecting millions of people across vast geographical areas. Yet, our brains, evolved over millennia to navigate environments on a much smaller scale, struggle to comprehend the breadth and depth of such phenomena. Similarly, pandemics spread globally at speeds that defy intuitive understanding, challenging our ability to perceive the interconnectedness of our world.
Understanding human scale perception of calamitous events is crucial for developing effective strategies for mitigation, response, and recovery. It requires an interdisciplinary approach, combining insights from psychology, sociology, geography, and environmental science, among others. By exploring the ways in which human cognition and emotion interact with the physical realities of large-scale disasters, we can begin to bridge the gap between the scale of these events and our limited human perception.
This exploration is not merely academic; it has profound implications for public policy, disaster management, and individual preparedness. Recognizing the limitations of human perception in the face of calamity allows us to better prepare, respond, and recover, safeguarding both lives and livelihoods in an increasingly uncertain world.
Cognitive Limits
Beyond the challenge of scale lies the inherent limitation of human cognition. Our minds are not equipped to process information at the speed or volume required to fully grasp the unfolding of catastrophic events. The complexity and rapid pace of change during such times strain our cognitive resources, leading to a disconnect between the reality of the event and our perception of it. This disconnect can result in underestimation of risk, delayed response, or even denial of the severity of the situation.
Emotional and Psychological Impact
The emotional and psychological toll of witnessing or experiencing calamities further complicates our perception. Fear, shock, and disbelief can cloud judgment and distort perceptions, making it difficult to assess the situation accurately. Moreover, the long-term psychological effects of such events, including trauma and post-traumatic stress disorder (PTSD), can alter how individuals and communities perceive future risks and respond to them.

## Natural events

A Natural phenomenon can easily turn into a natural disaster. Appearing to arise without direct human involvement, natural disasters are sometimes called an act of God as they may seem to defy simple and concise logical explanation or scientific reasoning for their occurrence in time or location and in general terms humanity has no short term direct control over the referred event.
Increasingly due to our technological advances human actions can easily shape, compound and accelerate natural occurring processes and so a natural disaster may become more severe because of human actions prior, during or after the disaster itself. For example there is a strong correlation between hydraulic fracturing (Fracking) and seismic activity and in general any human activity in risk areas may cause or promote natural disasters.
A specific disaster may spawn different types of events that may even reduce the survivability after the initial event. A classic example, is an earthquake that collapses homes, trapping people and breaking gas mains that then ignite, and burn people alive while trapped under debris. Volcanoes are particularly prone to causing other events like fires, lahars, mudflows, landslides, earthquakes, and tsunamis.
In the vast expanse of the universe, humanity stands as a unique entity, a product of evolutionary forces that have shaped life on Earth. Our emergence and subsequent evolution are not mere accidents of nature but seem to fulfill a purpose within the grand scheme of things. To understand humanity's purpose, we must first consider the universe itself—a dynamic, living entity teeming with energy and matter. The conditions that allowed life to emerge on Earth are extraordinary, suggesting a finely tuned harmony that supports life's existence. From the precise distance of our planet from the sun, the protective magnetic field, and the availability of essential elements, to the delicate balance of gases in our atmosphere, each aspect contributes to creating a habitat conducive to life.
Life, in its myriad forms, acts as a catalyst within this living universe. It evolves to harness and transform energy more efficiently, embodying the principle of self-organization observed in ecosystems. This evolutionary drive is not random but guided by natural selection and environmental feedback, leading to the emergence of species that can utilize energy most effectively. Humanity, as a pinnacle of this evolutionary process, represents a specialized tool designed to manage and sustain the biosphere.
Viewing humanity through this lens, we see ourselves not just as inhabitants of Earth but as stewards tasked with preserving and enhancing life's prospects. Our intelligence, creativity, and technological prowess equip us uniquely to address challenges that arise from our own actions and those of the natural world. This guardianship extends beyond our planet, as we explore the cosmos, seeking to understand our place in the universe and potentially spreading life to other worlds.
With great power comes great responsibility, and humanity's technological advancements bring with them the obligation to wield this power wisely. The ability to manipulate the environment, communicate instantaneously across continents, and even alter the genetic makeup of life places us in a position akin to a global guardian. This role demands vigilance, foresight, and ethical consideration in how we interact with our environment and each other.
Human break away from nature and natural processes
Its is hard to define when it occurred, but we broke out of the natural circle of nature due to the use of intelligence and tools, it probably started with the discovery of fire if it indeed was a discovery of Homo sapiens it may have been learned from one of our extinct cousin species. But what support this separation is culture and social relations, this is why we revert to more primal mindsets when in despair and extreme need and how simple survival prevents profound thought and the development of culture and technology. We have been morphological the same for more or less 35 million years, mentally almost the same and high culture only evolved from agriculture, sedentism and slavery probably one thousand years before Göbekli Tepe (a Neolithic archaeological site that was inhabited from c. 9500 to at least 8000 BCE, during the Pre-Pottery Neolithic. Among the world's oldest known megaliths. The site was first used at the dawn of the Southwest Asian Neolithic period, which marked the appearance of the oldest permanent human settlements anywhere in the world.).
While there may have been a beginning, the process continues. In the grand tapestry of human evolution, the threads of adaptation and survival are woven intricately with the fabric of our daily lives. Among these threads, the practices surrounding childbirth and the broader implications of these practices on human fertility, sexual identity, and societal norms often go unnoticed, yet they carry profound significance.
In exploring the complexities of human perception and awareness of global issues, we highlight the silent fertility crisis—a critical yet often overlooked factor contributing to counterintuitive demographic effects worldwide. This crisis is just one aspect of a multifaceted challenge shaping our societies, exacerbated by mass emigration due to increased instability, particularly in labor markets versus worker rights, access to resources, and the security of supply chains. As we transition from peak abundance to a state of declining resources, even advanced societies face the challenge of younger generations inheriting fewer resources than their predecessors. This situation is further complicated by aging populations living longer lives, underpinned by current economic and political challenges, legacy issues such as outdated institutions, and the dismantling of familial structures. Additionally, the looming specter of pollution, war, and economic insecurity casts a shadow over future prospects.
This era witnesses a replication of historical patterns of societal unrest through unequal distribution of resources, reminiscent of example given in the Arab Spring of 2011—a movement that was both a cry for justice and a tool for advancing US democratic values (distinct and flawed) and interests (mostly short term economic profit and medium term melitar-strategist regime control/change). The upcoming century promises a shift in global power dynamics from Anglo-Americans (not the West as a block as Europe still maintains certain independent thinking) to East, driven by demographic pressures that define market opportunities. China's unique demographic trajectory, potentially leading to conflict from 2024 on (China demographics give it a window that facilitates beligecy in the defense of what it perceives as its interests), all this underscores the urgency of addressing fertility rates stability (especially in that region of the globe), which have declined globally over the past half-century. Research indicates that a Total Fertility Rate (TFR) of approximately 2.1 is necessary to sustain a stable population, a figure that has steadily decreased alongside women's growing autonomy and access to alternative life paths.
The intersection of opportunity and uncertainty faced by younger generations, coupled with disparities in access to housing, security, food, economic stability, and valid and rewarding educational opportunities, presents a universal dilemma. Each society faces unique pressure points, yet the underlying issues—access to essential resources and the predictability of life improvement—are universally relevant. Addressing these challenges requires a comprehensive approach that acknowledges the interconnectedness of demographic trends, societal structures, and individual choices in shaping our collective future.
The Shift Towards Cesarean Sections
A pivotal moment in the history of human reproduction has been the widespread adoption of cesarean sections (C-sections). While this surgical procedure has undoubtedly saved countless lives and alleviated suffering, it has also introduced a subtle yet significant shift in human evolution. The ease of C-sections has led to an increase in the number of births performed through this method, which, in turn, affects the genetic pool and the physical adaptations necessary for natural childbirth. Research indicates that the prevalence of C-sections is influencing the evolution of pelvic dimensions, potentially leading to a narrowing of the pelvis in future generations. This phenomenon raises questions about the long-term implications of such medical interventions on human anatomy and physiology.
Microbial Landscape and Immune System Development
Beyond the physical aspects, the mode of delivery significantly influences the early microbial colonization of infants, which plays a crucial role in shaping their immune systems. Studies have shown that babies delivered vaginally are colonized predominantly by Lactobacillus, beneficial bacteria that promote a healthy immune response. In contrast, C-section-born infants are more likely to be colonized by potentially pathogenic bacteria, such as Staphylococcus and Acinetobacter, which are commonly found on the skin and in hospital environments. This difference in microbial exposure can lead to altered immune development, potentially increasing the risk of certain childhood diseases, including asthma and allergic reactions, already aggravated by our distanctiation (intentional or processual divergence) from natural environments.
Environmental Factors and Fertility
The landscape of human fertility and sexual identity is not just shaped by biological and sociocultural factors but is increasingly influenced by environmental elements. The pervasive presence of pollutants, hormonal interactions, plastic chemicals, and the extensive use of pesticides in agriculture pose significant challenges to reproductive health and societal norms. These issues, often overlooked, underscore the complex interplay between human biology, environment, and culture.
Environmental pollutants, including endocrine-disrupting chemicals (EDCs) found in plastics and pesticides, can interfere with the body’s hormone production and signaling. EDCs mimic or interfere with hormones such as estrogen and testosterone, which play crucial roles in sexual development, fertility, and reproductive health. Exposure to these chemicals during sensitive developmental periods can lead to alterations in sexual characteristics, reduced fertility, and increased risk of certain cancers. The cumulative effect of these disruptions across populations can subtly reshape societal norms around gender and sexuality, as individuals navigate changing physical and reproductive capabilities.
Plastics, Chemicals and Biological Agents
Plastic pollution, a ubiquitous feature of modern life, introduces numerous synthetic chemicals into the environment and food chain. Many of these chemicals are known to act as EDCs, disrupting normal hormonal functions. The widespread ingestion of microplastics and chemical residues through water, food, and air exposes individuals to constant low-level toxicity, potentially impacting fertility rates and the quality of offspring. This environmental factor, combined with the societal pressure to conform to traditional gender roles, creates a complex backdrop against which individuals negotiate their sexual identities and reproductive choices.
The agricultural sector, driven by the need for higher yields and pest control, relies heavily on pesticides and other biological agents. These substances, while essential for crop protection, can leach into groundwater and surface waters, contaminating drinking supplies and affecting human health. Prolonged exposure to pesticide residues can disrupt the endocrine system, impairing fertility and contributing to the decline in sperm count observed in many regions. Additionally, the use of genetically modified organisms (GMOs) and associated pesticides can have indirect effects on biodiversity and ecosystem services, which in turn may influence human health and well-being.
Environmental factors, in conjunction with biological and sociocultural elements, dynamically shape human fertility and sexual identity. Pollution and chemical exposures significantly influence reproductive health, prompting shifts in societal perceptions of fertility, parenthood, and gender roles. As individuals and communities navigate these evolving challenges and uncertainties surrounding reproduction, societal norms and expectations undergo transformation. This evolution mirrors the physical and psychological adaptations required due to environmental alterations.
Ultimately, the majority of these concerns stem from political and economic decisions, often made with varying degrees of awareness or understanding of the risks involved. By the time of World War II, there was an unprecedented exposure to synthetic chemicals released into the environment, for which no prior adaptation existed. When these substances became metabolized into biological systems, often competing by adding, suppressing, or blocking various functions, it became evident that the safety and protection of populations were far from being the primary concern of governments until the risks became public knowledge, the damage was undeniable, and the political status quo faced significant pressure. Plenty of examples exist from grave problems caused by DDT to the risks that lead to the Thalidomide to the need and results of the Green Revolution these are patterns that continuously repeat themselves...

## Man-made events

Disasters resulting form an element of human intent, negligence, error or involving a failure of a human controlled system are called man-made disasters. Man-made disasters like power or telecommunication outages, may be caused by natural causes, like thunderstorms, tornadoes or earthquakes and though the root cause is an act of God, they are considered a man-made disaster because they not only involve a failure of a human system but are mostly predictable and can be planed for. The power grid and telecommunication infrastructure could be made more resilient against outages however, probably due to cost and feasibility constraints, the systems were intentionally left vulnerable to outage. With an increase in complexity of the failed human system there is also an increase in the likelihood that it becomes systemic.

## Severe weather
### Climate change

Climate change is a complex phenomenon deeply intertwined with human activities, although humans are not solely responsible, they significantly contribute to its occurrence. This issue extends beyond mere increases in average temperatures to encompass rapid fluctuations in extreme weather events and heightened unpredictability. Additionally, the gradual rise in average temperatures has facilitated the continuous melting of glacial ice and polar ice caps, processes that have been ongoing for some time. Furthermore, the elevation of carbon levels in the atmosphere leads to ocean acidification and exacerbates the greenhouse effect. The sun's cycle also plays a role. The sun's energy output varies slightly over its approximately 11-year cycle, these variations account for only a small fraction of the recent warming observed. The majority of the warming is attributed to human-induced greenhouse gas emissions.
The primary driver behind the current climate change is human activity, particularly the burning of fossil fuels, which releases significant amounts of greenhouse gases into the atmosphere. This has led to a dramatic increase in the concentration of these gases, contributing to the overall warming of the planet.
Greenhouse Effect: The greenhouse effect is a natural process that warms the Earth's surface. However, human activities have amplified this effect, leading to higher temperatures and altering natural climate patterns. This has resulted in more frequent and severe weather events, including heatwaves, droughts, and heavy rainfall.
Weather Patterns and Erosion: Intensified weather patterns and accelerated erosion are critical components of the broader impacts of climate change. The relationship between heat, energy, and human activities underscores the urgency of addressing these issues.
* Heat and Energy Dynamics: The burning of fossil fuels releases large quantities of greenhouse gases, which trap heat within the Earth's atmosphere. This process not only raises global temperatures but also alters the dynamics of energy exchange between the Earth and its atmosphere. The previously stored and reflected energy from the sun that is now retained leads to a rapid intensification of climate and weather patterns.
* Impact on Weather Patterns: The increase in global temperatures leads to more frequent and severe weather events, including storms, floods, and droughts. Warmer ocean surfaces enhance the formation and intensity of cyclones, hurricanes, and typhoons, which can devastate coastal communities and ecosystem.
* Accelerated Erosion: Rising temperatures and altered precipitation patterns exacerbate erosion processes. More intense rainfall and higher evaporation rates can lead to soil degradation and loss, undermining the stability of landscapes and the sustainability of agricultural practices. These changes necessitate adaptive measures to protect against the erosive forces of climate change.
Ocean Acidification: Increased levels of carbon dioxide in the atmosphere dissolve into oceans, forming carbonic acid. This process lowers the pH of seawater, a condition known as ocean acidification. It harms marine ecosystems, affecting organisms such as corals and shellfish, which rely on carbonate ions to build their skeletons and shells.
Sea-Level Rise: As global temperatures increase, thermal expansion of seawater and melting glaciers contribute to rising sea levels. This poses significant risks to coastal communities, threatening infrastructure, freshwater supplies, and biodiversity. Coastal erosion accelerates, further endangering habitats and reducing land available for agriculture and settlement. Flood Maps (http://flood.firetree.net/) is a WEB tool that permits to visualize the results of seawater level rise, in relation to coastal areas, it does not take in consideration normal erosion not claims to be extremely exact its errors are on the optimistic side.
Agricultural, Fishing Productivity and Harvesting of biologic resources: Changes in temperature and precipitation patterns can impact crop yields, wildfires and natural biologic processes, changes in habitats and reproduction. Warmer conditions may extend growing seasons in some regions but could also lead to more frequent and intense droughts in others, posing challenges to food security. Additionally, rising sea levels and saltwater intrusion threaten fertile lands, especially in low-lying areas.
The study of climate change and its effect are looked in more depth on the Wikibook Climate Change. Climate change may be a cause of specific weather related calamities because of the increased predictability, that may also affect food supplies and production. In 2011 unusual floods even impacted on the price of hard-disks since factories had been geographically concentrated, this type of disruptions will tend to occur more often and in faster cycles.

### Winter storm

A snowstorm is a winter storm in which the primary form of precipitation is snow. When such a storm is accompanied by winds above 32 mph that severely reduce visibility, it becomes a blizzard. Hazards from snowstorms and blizzards include traffic-related accidents, hypothermia for those unable to find shelter, as well as major disruptions to transportation and fuel and power distribution systems.

### Thunderstorm

A thunderstorm is a form of severe weather characterized by the presence of lightning and its attendant thunder, often accompanied by copious rainfall, hail and on occasion snowfall and tornadoes.

### Hail-storm

A hailstorm is a natural disaster where a thunderstorm produces a numerous amount of hailstones which damage the location in which they fall. Hailstorms can be especially devastating to farm fields, ruining crops and damaging equipment. A particularly damaging hailstorm hit Munich, Germany on August 31, 1986, felling thousands of trees and causing millions of dollars in insurance claims. Skeleton Lake, a glacial lake in Uttarakhand state of India, was named so after 300-600 people were killed by a hailstorm.

### Hurricane, Typhoon, or Tropical cyclone

A hurricane is a low-pressure cyclonic storm system which forms over the oceans. It is caused by evaporated water which comes off of the ocean and becomes a storm. The Coriolis Effect causes the storms to spin, and a hurricane is declared when this spinning mass of storms attains a wind speed greater than 74mph. In different parts of the world hurricanes are known as cyclones or typhoons. The former occur in the Indian Ocean, while the latter occur in the Eastern Pacific Ocean. The most damaging hurricane ever was Hurricane Andrew, which hit southern Florida in 1992.

#### Storm surge

A storm surge is an onshore rush of water associated with a low pressure weather system, typically a tropical cyclone. Storm surge is caused primarily by high winds pushing on the ocean's surface. The wind causes the water to pile up higher than the ordinary sea level. Storm surges are particularly damaging when they occur at the time of a high tide, combining the effects of the surge and the tide. The highest storm surge ever recorded was produced by the 1899 Bathurst Bay Hurricane, which caused a 13 m (43 feet) storm surge at Bathurst Bay, Australia. In the US, the greatest recorded storm surge was generated by Hurricane Camille, which produced a storm surge in excess of 25 feet (7.6 m).

### Tornado

A tornado is a natural disaster resulting from a thunderstorm. Tornadoes are violent currents of wind which can blow at up to 318mph. Tornadoes can occur one at a time, or can occur in large tornado outbreaks along a squall line. The worst tornado ever recorded in terms of wind speed was the tornado which swept through Moore, Oklahoma on May 3, 1999. This tornado has wind speeds of 318mph and was the strongest ever recorded.

#### Waterspout

A waterspout is a tornadic weather phenomena normally occurring over tropical waters in light rain conditions. They form at the base of cumulus-type clouds, extend to the water surface where winds pick up water spray. Waterspouts are dangerous to boats, planes and land structures. Many waterspouts occur in the Bermuda Triangle and are suspected of being the a cause of the many missing ships and planes in that region.

### Drought

A drought is a long-lasting weather pattern consisting of dry conditions with very little or no precipitation. during this period, food and water supplies can run low, and other conditions, such as famine, can result. Droughts can last for several years and are particularly damaging in areas in which the residents depend on agriculture for survival. The Dust Bowl is a famous example of a severe drought.
Droughts are slowly evolving calamities, they can be planed for and with enough resources have their impact demolished. Unless the drought affects a full continent (lets say Australia) a drought can hardly be seen as a calamity that one needs to prepare specifically.

## Biological-Chemical Contamination
### CBRNs

A catch-all initialism meaning Chemical Biological Radiological Nuclear. The term is used to describe a non-conventional terror threat that, if used by a nation, would be considered use of a weapon of mass destruction. This term is used primarily in the United Kingdom. Planning for a CBRN event may be appropriate for certain high-risk or high-value facilities and governments.
In this section we will not cover radiological threats, they will be covered in separate since are more distinct and rarer as natural occurrence, but result from the immediate impact of human action where impact is higher and long-lasting.
Radiological Material
* Alpha Particles: Large particles with limited range but significant damage.
* Beta Particles: Small particles with a range in air of centimeters.
* Gamma/X-Ray Radiation: High-energy photons with no mass but highly penetrating.
* Neutrons: Associated with nuclear processes, highly penetrating with variable damaging effects.
Example: The Nuclear Explosion of Hiroshima bombing (1945) a prototype weapon, small in any comparison with modern weapons, estimated 140,000 deaths due to immediate effects, with many more dying later from radiation-related illnesses. Immediate effects occur within seconds to minutes (from heat and kinethic force thne sofucation and fire), but long-term health impacts last decades.
Example: Radiological Material that resulted in Gamma/X-Ray Radiation and Fallout on the Chernobyl disaster (1986), resulted in thousands of deaths due to radiation exposure and long-term health issues. Long-term cancer risks increase significantly with higher doses of radiation. Acute radiation syndrome symptoms appear within hours to days, but long-term effects manifest over years.
Chemical Agents
* Nerve Agents: Highly potent organophosphorus compounds that inhibit acetylcholinesterase, leading to muscle weakness and paralysis.
* Blistering Agents (Vesicants): Cause severe blistering of the skin and mucous membranes upon contact.
* Cyanides (Blood Agents): Prevent cells from using oxygen, leading to suffocation.
* Pulmonary Agents: Damage the lungs, causing difficulty breathing.
* Incapacitants: Cause temporary incapacitation through sensory irritation.
* Toxic Industrial Chemicals (TICs): Various chemicals found in industry that can cause harm.
* Riot-Controlled Agents (RCAs): Used by law enforcement, not prohibited internationally but can cause harm.
* Pharmaceuticals: Illicit or commercial drugs at toxic doses.
Example: The use of the chemical agent Sarin gas (a nerve agent) in the an attack in Japan (1995), killed 12 people immediately, with thousands injured. Effects can be felt within minutes of exposure.
Biological Agents The U.S. government regulates more than 15 biological agents and in Set. 2014 asked universities to flag risky pathogen experiments. These can be divided in Live Agents (include bacteria, viruses, and fungi that can cause disease) and BioToxins (chemical substances produced by living organisms that can cause illness or death).
* Avian influenza virus (highly pathogenic)
* Bacillus anthracis
* Botulinum neurotoxin
* Burkholderia mallei
* Burkholderia pseudomallei
* Ebola virus
* Foot-and-mouth disease virus
* Francisella tularensis
* Marburg virus
* Reconstructed 1918 Influenza virus
* Rinderpest virus
* Toxin-producing strains of Clostridium botulinum
* Variola major virus
* Variola minor virus
* Yersinia pestis
Example: The biological agent (live agent) Anthrax attacks in the U.S. (2001), caused 5 deaths.

### Natural Events

Disease becomes a disaster when it spreads in a pandemic or epidemic as a massive outbreak off an infectious agent. Disease is historically the most dangerous of all natural disasters. Different epidemics are caused by different diseases, the Black Death, smallpox, and AIDS. The Spanish flu of 1918 was the deadliest ever epidemic, it killed 25-40 million people. The Black Death, which occurred in the 14th Century, killed over 20 million people, one third of Europe's population. Plant and animal life may also be affected by disease epidemics and pandemics.

## Definition

A pandemic (from Greek παν pan all + δήμος demos people) is an epidemic that spreads through human populations across a large region (for example a continent), or even worldwide.
According to the World Health Organization (WHO), a pandemic can start when three conditions have been met:
* the emergence of a disease new to the population.
* the agent infects humans, causing serious illness.
* the agent spreading is sustainable and easy among humans.
A disease or condition is not a pandemic merely because it is widespread or kills many people; it must also be infectious. For example cancer is responsible for many deaths but is not considered a pandemic because the disease is not infectious or contagious (although certain causes of some types of cancer might be).

### WHO pandemic influenza phases

The World Health Organization global influenza preparedness plan defines the stages of pandemic influenza, outlines the role of WHO and makes recommendations for national measures before and during a pandemic. The phases are:
Inter-pandemic period:
* Phase 1: No new influenza virus subtypes have been detected in humans.
* Phase 2: No new influenza virus subtypes have been detected in humans, but an animal variant threatens human disease.
Pandemic alert period:
* Phase 3: Human infection(s) with a new subtype but no human-to-human spread.
* Phase 4: Small cluster(s) with limited localized human-to-human transmission
* Phase 5: Larger cluster(s) but human-to-human spread still localized.
Pandemic period:
* Phase 6: Increased and sustained transmission in general population.

### Pandemics and notable epidemics through history

There have been a number of significant pandemics recorded in human history, generally zoonoses that came about with domestication of animals — such as influenza and tuberculosis. There have been a number of particularly significant epidemics that deserve mention above the "mere" destruction of cities:
* Typhoid fever, during thePeloponnesian War, 430 BC, killed a quarter of the Athenian troops and a quarter of the population over four years. This disease fatally weakened the dominance of Athens, but the sheer virulence of the disease prevented its wider spread; i.e. it killed off its hosts at a rate faster than they could spread it. The exact cause of the plague was unknown for many years; in January 2006, researchers from the University of Athens analyzed teeth recovered from a mass grave underneath the city, and confirmed the presence of bacteria responsible for typhoid.
* Antonine Plague, 165 – 180. Possibly smallpox brought back from the Near East; killed a quarter of those infected and up to five million in all. At the height of a second outbreak (251–266) 5,000 people a day were said to be dying in Rome.
* Bubonic plague also named in the first recorded outbreak as the Plague of Justinian, from 541 to 750. It started in Egypt and reached Constantinople the following spring, killing (according to the Byzantine chronicler Procopius) 10,000 a day at its height and perhaps 40% of the city's inhabitants. Plague went on to eliminate a quarter to a half of the human population that it struck throughout the known world. It caused the Europe's population to drop by around 50% between 550 and 700.
* The Black Death, started 1300s. Eight hundred years after the last outbreak, the bubonic plague returned to Europe. Starting in Asia, the disease reached Mediterranean and western Europe in 1348 (possibly from Italian merchants fleeing fighting in the Crimea), and killed 20 to 30 million Europeans in six years, a third of the total population and up to a half in the worst-affected urban areas.
* The English Sweat, that struck England, and later continental Europe, in a series of epidemics beginning in 1485. The last outbreak occurred in 1551, after which the disease apparently vanished. The onset of symptoms was dramatic and sudden, with death often occurring within hours making it even more feared than the bubonic plague. Its cause is still unknown.
* Typhus, sometimes called "camp fever" because of its pattern of flaring up in times of strife. (It is also known as "gaol fever" and "ship fever", for its habits of spreading wildly in cramped quarters, such as jails and ships.) Emerging during the Crusades, it had its first impact in Europe in 1489 in Spain. During fighting between the Christian Spaniards and the Muslims in Granada, the Spanish lost 3,000 to war casualties and 20,000 to typhus. In 1528 the French lost 18,000 troops in Italy and lost supremacy in Italy to the Spanish. In 1542, 30,000 people died of typhus while fighting the Ottomans in the Balkans. The disease also played a major role in the destruction of Napoleon's Grande Armée in Russia in 1812. Typhus also killed numerous prisoners in the Nazi concentration camps during World War II.
* Influenza
** The "first" pandemic of 1510 traveled from Africa and spread across Europe.
** The "Asiatic Flu", 1889–1890. Was first reported in May of 1889 in Bukhara, Russia. By October, it had reached Tomsk and the Caucasus. It rapidly spread west and hit North America in December 1889, South America in February – April 1890, India in February-March 1890, and Australia in March – April 1890. It was purportedly caused by the H2N8 type of flu virus and had a very high attack and mortality rate.
** The "Spanish flu", 1918–1919. First identified early March 1918 in US troops training at Camp Funston, Kansas, by October 1918 it had spread to become a world-wide pandemic on all continents. Unusually deadly and virulent, it ended nearly as quickly as it began, vanishing completely within 18 months. In six months, 25 million were dead; some estimates put the total of those killed worldwide at over twice that number. An estimated 17 million died in India, 500,000 in the United States and 200,000 in the UK. The virus was recently reconstructed by scientists at the CDC studying remains preserved by the Alaskan permafrost. They identified it as a type of H1N1 virus.
** The "Asian Flu", 1957–58. An H2N2 caused about 70,000 deaths in the United States. First identified in China in late February 1957, the Asian flu spread to the United States by June 1957.
** The "Hong Kong Flu", 1968–69. An H3N2 caused about 34,000 deaths in the United States. This virus was first detected in Hong Kong in early 1968 and spread to the United States later that year. Influenza A (H3N2) viruses still circulate today.
* Cholera
** first pandemic 1816 – 1826. Previously restricted to the Indian subcontinent, the pandemic began in Bengal, then spread across India by 1820. It extended as far as China and the Caspian Sea before receding.
** The second pandemic (1829–1851) reached Europe, London in 1832, Ontario Canada and New York in the same year, and the Pacific coast of North America by 1834.
** The third pandemic (1852–1860) mainly affected Russia, with over a million deaths.
** The fourth pandemic (1863–1875) spread mostly in Europe and Africa.
** In 1866 there was an outbreak in North America.
** In 1892 cholera contaminated the water supply of Hamburg, Germany, and caused 8,606 deaths.
** The seventh pandemic (1899–1923) had little effect in Europe because of advances in public health, but Russia was badly affected again.
** The eighth pandemic began in Indonesia in 1961, called El Tor after the strain, and reached Bangladesh in 1963, India in 1964, and the USSR in 1966.
Dengue. Spread of Dengue disease in South Asia by a mosquito.
* SARS‑CoV‑2 (Severe acute respiratory syndrome coronavirus 2) 2019 to 2021 and onwards

### Colonization and Disease

Effects of Colonization. Encounters between European explorers and populations in the rest of the world often introduced local epidemics of extraordinary virulence. Disease killed the entire native (Guanches) population of the Canary Islands in the 16th century. Half the native population of Hispaniola in 1518 was killed by smallpox. Smallpox also ravaged Mexico in the 1520s, killing 150,000 in Tenochtitlán alone, including the emperor, and Peru in the 1530s, aiding the European conquerors. Measles killed a further two million Mexican natives in the 1600s. Some believe that the death of 90 to 95 percent of the Native American population of the New World was caused by Old World diseases. As late as 1848–49, as many as 40,000 out of 150,000 Hawaiians are estimated to have died of measles, whooping cough and influenza.
There are also a number of unknown diseases that were extremely serious but have now vanished, so the etiology of these diseases cannot be established.

## Concern about possible future pandemics
### Ebola virus and other quickly lethal diseases

Lassa fever, Rift Valley fever, Marburg virus, Ebola virus and Bolivian hemorrhagic fever are highly contagious and deadly diseases with the theoretical potential to become pandemics. Their ability to spread efficiently enough to cause a pandemic is limited as transmission of these viruses requires close contact with the infected vector. Furthermore, the short time between a vector becoming infectious and the onset of symptoms allows medical professionals to quickly quarantine vectors and prevent them from carrying the pathogen elsewhere. In general each outbreak if not closely related in time and geography will often be a new strain of the virus and genetic mutations could occur which could elevate their potential for causing widespread harm, thus close observation by contagious disease specialists is merited.
It is also interesting to note that conditions that potentiate the contamination change, for example the circumstances to contract the virus are completely different in West Africa than they are in Russia or the USA. Not only there are environmental aspects but cultural and even technological distinctions. One example is that the possibility of Ebola to spread by aerosol (trough mist in air) seems to increase in cold and dry conditions that do not exist in Africa, another is how contamination often results in contact with specific animals (or animal products) that require a specific geographic location and cultural/economic circumstance.

### Antibiotic resistance

Antibiotic-resistant microorganisms, sometimes referred to as "superbugs", may contribute to the re-emergence of diseases which are currently well-controlled. For example, cases of tuberculosis that are resistant to traditionally effective treatments remain a cause of great concern to health professionals. The World Health Organization (WHO) reports that approximately 50 million people worldwide are infected with multiple-drug resistant tuberculosis (MDR TB), with 79 percent of those cases resistant to three or more antibiotics. In 2005, 124 cases of MDR TB were reported in the United States. Extensively drug-resistant tuberculosis (XDR TB) was identified in Africa in 2006, and subsequently discovered to exist in 17 countries including the United States.
In the past 20 years, common bacteria including Staphylococcus aureus, Serratia marcescens and Enterococcus, have developed resistance to various antibiotics such as vancomycin, as well as whole classes of antibiotics, such as the aminoglycosides and cephalosporins. Antibiotic-resistant organisms have become an important cause of health care-associated (nosocomial) infections (HAI). In addition, infections caused by community-acquired strains of methicillin-resistant Staphylococcus aureus (MRSA) in otherwise healthy individuals, have become more frequent in recent years.

### HIV infection

HIV — the virus that causes AIDS — is of pandemic proportions with infection rates as high as 25% in southern and eastern Africa. Effective education about safer sexual practices and bloodborne infection precautions training have helped to slow down infection rates in several African countries sponsoring national education programs. Infection rates are rising again in Asia and the Americas. See AIDS pandemic.

### Influenza

Wild aquatic birds are the natural hosts for a range of influenza A viruses. Occasionally viruses are transmitted from these species to other species and may then cause outbreaks in domestic poultry or (rarely) give rise to a human pandemic.

### H5N1

In February 2004, avian influenza virus was detected in birds in Vietnam, increasing fears of the emergence of new variant strains. It is feared that if the avian influenza virus combines with a human influenza virus (in a bird or a human), the new subtype created could be both highly contagious and highly lethal in humans. Such a subtype could cause a global influenza pandemic, similar to the Spanish Flu, or the lower mortality pandemics such as the Asian Flu and the Hong Kong Flu.
From October 2004 to February 2005, some 3,700 test kits of the 1957 Asian Flu virus were accidentally spread around the world from a lab in the US.
In May 2005, scientists urgently call nations to prepare for a global influenza pandemic that could strike as much as 20% of the world's population.
In October 2005, cases of the avian flu (the deadly strain H5N1) were identified in Turkey. EU Health Commissioner Markos Kyprianou said: "We have received now confirmation that the virus found in Turkey is an avian flu H5N1 virus. There is a direct relationship with viruses found in Russia, Mongolia and China." Cases of bird flu were also identified shortly thereafter in Romania, and then Greece. Possible cases of the virus have also been found in Croatia, Bulgaria and in the United Kingdom .
By November 2007 numerous confirmed cases of the H5N1 strain had been identified across Europe . However, by the end of October only 59 people had died as a result of H5N1 which was atypical of previous influenza pandemics.
Despite sensational media reporting, avian flu cannot yet be categorized as a "pandemic" because the virus cannot yet cause sustained and efficient human-to-human transmission. Cases so far are recognized to have been transmitted from bird to human, but as of December 2006 there have been very few (if any) cases of proven human-to-human transmission. Regular influenza viruses establish infection by attaching to receptors in the throat and lungs, but the avian influenza virus can only attach to receptors located deep in the lungs of humans, requiring close, prolonged contact with infected patients and thus limiting person-to-person transmission. The current WHO phase of pandemic alert is level 3, described as "no or very limited human-to-human transmission."
* ↑ Cambridge Catalog page "Plague and the End of Antiquity" Quotes from book "Plague and the End of Antiquity" Lester K. Little, ed., Plague and the End of Antiquity: The Pandemic of 541-750, Cambridge, 2006. ISBN 0-521-84639-0
* ↑ The History of the Bubonic Plague
* ↑ Death on a Grand Scale
* ↑ Plague - 1911 Encyclopædia Britannica
* ↑ Beveridge, W.I.B. (1977) Influenza: The Last Great Plague: An Unfinished Story of Discovery, New York: Prodist. ISBN 0-88202-118-4.
* ↑ Potter, C.W. (2001). "A History of Influenza". Journal of Applied Microbiology. 91 (4): 572–579. doi:10.1046/j.1365-2672.2001.01492.x. {{cite journal}}: |access-date= requires |url= (help); Unknown parameter |month= ignored (help)
* ↑ John M. Barry, (2004). The Great Influenza: The Epic Story of the Greatest Plague in History. Viking Penguin. ISBN 0-670-89473-7.
* ↑ The Story Of... Smallpox
* ↑ Smallpox: Eradicating the Scourge
* ↑ Klenk; et al. (2008). "Avian Influenza: Molecular Mechanisms of Pathogenesis and Host Range". Animal Viruses: Molecular Biology. Caister Academic Press. ISBN 978-1-904455-22-6. {{cite book}}: Explicit use of et al. in: |author= (help); Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)]}}
* ↑ Kawaoka Y (editor). (2006). Influenza Virology: Current Topics. Caister Academic Press. ISBN 978-1-904455-06-6. {{cite book}}: |author= has generic name (help) }}

### Accidental Events

The definition of accident is at times very murky, an accident strictly speaking results from an unplanned failure, but the categorization of accidents depends on the observer of the event. Some "accidents" may be even intentionally created or at least considered as a possible result for the causer.

#### Biological and Systemic repercussions may bypass causality

We live in an ecosphere where a multitude of biological agents compete (and evolve) amongst themselves for resources and survival, our planet is a semi-closed system making all the biology therein highly dependent on each-other directly, like in a hunter-pray or symbiotic relation or simply dependent on the actions that other agents perform in the system.
An accident can be categorized of a biological nature if the cause is a biological process but most often the classification is also used to include any accident that affects the normal biological functions in a system and this makes if very difficult to distinguish for example a toxic accident from a biological one. Take for instance the recent issue regarding the decline of the population of domesticated bees, a 50% decline in the U.S and the E.U. at the start of 2013. It is at the same time a problem of toxic poisoning due to pesticide use and a biological one due to the genetic manipulation of crops both affecting the immune system of the bees and promoting the spread and lethality of natural occurring diseases, allied with the already depressed quality of the environment due to pollution and the rapidly altering weather patterns resulting from climate change. A problem so grave that there are concerns that it may even lead to the extinction of the species if not corrected.
   "If the bee disappears from the surface of the earth, man would have no more than four years to live." — Albert Einstein.

#### Toxic
##### Nano-particles
### Intentional Attack Event
#### Toxic
## Volcanic eruption

This natural disaster is caused by the eruption of a volcano, and eruptions come in many forms and have subsequent effects. They may range from daily small eruptions which occur in places; like Kilauea, in Hawaii, or extremely infrequent supervolcano eruptions in places like Lake Toba. They can geologically shape large geographic regions, alter river beds and impact climate and chemically alter the soil, water and atmospheric quality of areas.
Recent large volcanic eruptions include that of Mount St. Helens and Krakatoa, occurring in 1980 and 1883, respectively. While to a degree we can say the historic records of events of large scale are rare we must take in consideration that these are geological slow processes processes, and in that scale humanity has yet had very little chance be witness to the more larger events that we know to have and that will naturally occur. Wikipedia has maintains a [[w:list of large volcanic eruptions}} .

#### Lahar

A Lahar is a water, mud, rock and debris slide along rivers, caused by the sudden melting of a snow-capped volcano during, or as a consequence, of an eruption.
The eruption of the Volcán del Ruiz in Colombia produced massive lahars which ran down the rivers and creeks. One of these lahars jumped on a valley with a wave of 60 mt. (200 ft.)in height and struck the town of Armero in the night of November 13, 1985, causing the leveling of 80% of the town's buildings and houses. The death toll was estimated at 25,000 deaths, but recent estimates put the figure in 21,000 deaths. In a touch of irony, the graveyard of Armero was spared of destruction (Armero tragedy).

#### Super volcanoes

The Toba catastrophe theory that addresses the super-volcanic eruption that occurred about 75,000 years ago at the site of present-day Lake Toba in Indonesia, in what is so far one of the Earth's largest known eruptions. The erupted mass was 100 times greater than that of the largest volcanic eruption in recent history, including the 1815 eruption of Mount Tambora in Indonesia, which caused the 1816 "Year Without a Summer" in the Northern Hemisphere. Toba's erupted mass deposited an ash layer of about 15 cm thick over the whole of South Asia. A blanket of volcanic ash was also deposited over the Indian Ocean, the Arabian Sea, and the South China Sea. The theory holds that this event caused a global volcanic winter of six to ten years and possibly a 1,000-year-long cooling episode and points to the event as the cause of a genetic bottleneck that resulted from in a sharp decline in human population, supported by some genetic evidence that today's humans are descended from a very small population of between 1,000 and 10,000 breeding pairs that existed about 70,000 years ago.

## Limnic eruption

A sudden release of asphyxiating or inflammable gas from a lake. Three lakes are at risk of limnic eruptions, Lake Nyos, Lake Monoun, and Lake Kivu. A 1986 limnic eruption of 1.6 million tonnes of CO$_2$ from Lake Nyos suffocated 1,800 people in a 20 mile radius. In 1984, a sudden out-gassing of CO$_2$ had occurred at Lake Monoun, killing 37 local residents. Lake Kivu, with concentrations of methane and CO$_2$, has not experienced a limnic eruption during recorded history, but is suspected of having periodic eruptions every 1,000 years.

## Earth-quake

An earthquake is a sudden shift or movement in the tectonic plate within the Earth's crust, manifesting on the surface as ground movement and shaking. These events can cause significant damage to structures, ranging from poorly built ones to even the most robustly constructed buildings. The most potent earthquakes can devastate entire cities, as evidenced by historical events such as the 1976 Tangshan and 2004 Indian Ocean earthquakes, which resulted in massive loss of life and property.
There is also the economic and social impacts of an earthquake extend far beyond immediate destruction. In sparsely populated areas, the primary concern shifts from human casualties to environmental damage and the potential long-term effects on local ecosystems. Conversely, in densely populated urban centers like Los Angeles or Tokyo, the aftermath of a major quake can lead to significant economic disruptions. Cities might face shortages in essential services, leading to widespread panic and displacement of residents. In extreme cases, such as a catastrophic earthquake in Japan, the government and national concerned corporations might redirect resources away from foreign investments towards domestic recovery efforts.
This variability in earthquake impacts across different locations and times highlighting the profound impact of seismic events on national priorities and human systems, even logistics. Similar magnitude earthquakes can produce vastly different outcomes due to variations in geological conditions, building codes, emergency preparedness, and societal resilience. For example, an earthquake occurring in a region with stringent building standards and advanced early warning systems might result in fewer casualties compared to an identical quake striking an area with lax regulations and limited preparedness measures.
In conclusion, the impact of earthquakes is multifaceted, influenced by both the physical characteristics of the seismic event and the socio-economic context of the affected area. Understanding this complexity is crucial for developing effective disaster management strategies and for fostering communities that are better equipped to withstand and recover from such natural disasters.
Kinetic Forces during an earthquake are primarily responsible for the ground shaking experienced. These forces originate from the sudden release of energy deep within the Earth's crust, as tectonic plates move relative to each other. The intensity of shaking increases with the distance from the earthquake's epicenter and depth, affecting a wide area around the fault line. The shaking can cause significant damage to structures, especially those not designed to withstand such movements. Sound Waves and Air Pressure
Sound waves generated by an earthquake travel through the air and can cause damage to buildings and other structures, especially if they are already weakened by the ground shaking. The initial shock wave, often referred to as the P-wave, is followed by S-waves that cause the actual shaking. Both types of waves can generate noise, contributing to the overall destructive power of the earthquake.
Air pressure changes associated with the passage of these waves can also affect individuals and structures, potentially causing discomfort or injury. In some cases, the rapid change in atmospheric pressure can lead to the creation of microbaroms, low-frequency sounds produced by the interaction between the atmosphere and the seismic waves. Ground Liquefaction
One of the most fascinating and destructive aspects of earthquakes is ground liquefaction. This phenomenon occurs when saturated or partially saturated soil loses strength and stiffness in response to shaking, behaving like a liquid rather than a solid. This transformation can lead to severe ground deformations, such as the formation of sand boils or the development of large cracks in the ground.
Liquefaction can have devastating effects on structures built on or near affected areas. Buildings and other man-made structures can sink into the ground, tilt, or even collapse as the underlying soil turns to liquid. This process can bury surface items, creating scenes reminiscent of shaken cereal, where previously stable objects are suddenly submerged beneath the shifting ground.
Example Scenario: The 1989 Loma Prieta earthquake in California provides a vivid example of ground liquefaction. During this event, saturated soils along the San Andreas Fault liquefied, leading to significant ground failure. This caused numerous buildings and roads to collapse, with cars and debris buried in the ground. The Nimitz Freeway segment collapsed, trapping drivers and passengers under tons of concrete and earth, illustrating the deadly potential of liquefaction.
Understanding the area of effect, including the kinetic forces, sound waves, and the phenomenon of ground liquefaction, is crucial for assessing the risks associated with earthquakes and designing safer structures and emergency response plans.
Area of Effect of an Earthquake
The area of effect of an earthquake encompasses several dimensions:
The maximum extent refers to the largest geographical area potentially affected by an earthquake. This can range from localized effects near the epicenter to broader regional impacts due to secondary phenomena such as tsunamis or aftershocks. The size of the area affected is largely dependent on the magnitude of the earthquake and the geology of the region.
The minimum extent typically focuses on the immediate vicinity around the epicenter, where the ground shaking is most intense. This area experiences the highest levels of structural damage and potential loss of life.
Below is a list of five notable earthquakes, with descriptions of their effects based on time and location (sorted down by impact straight).
    Great Kantō Earthquake (1923, Japan) - Magnitude 7.9
       Location: Eastern part of Honshu Island, Japan.
       Effects: Occurring during a period of rapid modernization, this earthquake led to extensive urban destruction, particularly in Yokohama and Tokyo. It highlighted the vulnerability of wooden construction methods prevalent at the time and prompted significant changes in building codes.
    San Francisco Earthquake (1906, United States) - Magnitude 7.8
       Location: San Francisco Bay Area, California.
       Effects: While primarily known for the devastating fire that followed, the earthquake itself caused significant structural damage, particularly to unreinforced masonry buildings. The event underscored the importance of earthquake-resistant design in seismically active regions.
    Haiti Earthquake (2010) - Magnitude 7.0
       Location: Port-au-Prince, Haiti.
       Effects: Despite being relatively shallow, this earthquake devastated the capital city, causing widespread loss of life and infrastructure collapse. The event highlighted the challenges faced by developing countries in preparing for and responding to large-scale disasters.
    Chilean Earthquake (1960) - Magnitude 9.5
       Location: Southern Chile.
       Effects: One of the strongest earthquakes ever recorded, it triggered a tsunami that caused significant coastal damage across the Pacific Rim. The earthquake emphasized the global reach of seismic events and the importance of international cooperation in disaster response.
    Sumatra Earthquake (2004) - Magnitude 9.1
       Location: Off the west coast of northern Sumatra, Indonesia.
       Effects: Triggered a massive tsunami that affected countries around the Indian Ocean basin, resulting in one of the deadliest natural disasters in recorded history. The event underscored the need for early warning systems and international coordination in disaster management.
This list illustrates how the impact of earthquakes varies significantly based on factors such as the location's susceptibility to seismic activity, the state of preparedness and infrastructure, and the presence of secondary hazards like tsunamis.
Predicting Earthquakes: Challenges and Clusters
Predicting when and where the next major earthquake will occur anywhere on Earth remains an unsolvable puzzle due to the complex interplay of geological, atmospheric, and other factors. However, scientific understanding has revealed patterns and mechanisms that offer insights into earthquake behavior. Notably, earthquakes tend to occur in clusters, often near fault lines or volcanic areas, indicating that the buildup of stress along these geological features plays a significant role in triggering seismic activity. Earthquake Clusters and Fault Zones
Earthquake clusters refer to sequences of tremors that occur in a specific geographic area over a short period, often following a larger mainshock. These clusters can involve both the mainshock and numerous aftershocks, reflecting the ongoing adjustment of the Earth's crust in response to the initial disturbance. Fault zones, such as the North Anatolian Fault in Turkey, are particularly prone to generating these clusters due to the continuous movement of tectonic plates against each other, accumulating stress over time until it is released in the form of earthquakes.
Examples of Earthquake Clusters:
* Turkey Earthquake Clusters: The North Anatolian Fault in Turkey exemplifies the clustering pattern of earthquakes. Historical records show that this fault zone has experienced several catastrophic earthquakes, with each event increasing the strain on adjacent segments of the fault. Following the 1999 Izmit earthquake, scientists predicted a 62% likelihood of heavy shaking near Istanbul over the following 30 years, highlighting the interconnected nature of fault systems and the potential for cascading seismic activity.
* Progression Across Fault Lines: The progression of earthquakes along fault lines can span considerable distances, affecting areas far from the initial epicenter. For instance, the 2004 Sumatra earthquake triggered a devastating tsunami that reached as far as the coasts of Portugal, demonstrating the global impact of seismic activity originating from fault lines.
Kinetic Force Compression and Criticality
The kinetic force compression model suggests that the Earth's crust behaves much like an elastic material, storing energy as stress builds up along fault lines. When this stored energy reaches a critical threshold, it is released in the form of an earthquake. This process involves the compression and subsequent release of kinetic forces, which can lead to significant ground shaking and potential damage. Safety Precautions
Given the unpredictability of earthquakes and their potential for widespread devastation, the safest precautionary measure is to avoid living in areas known for high seismic activity, particularly near active fault zones or volcanic regions. Hazard maps, informed by scientific research and technological advancements, can help identify these risky areas, enabling policymakers, planners, and individuals to make informed risk decisions about where to build and live.
Hydraulic Fracturing and Induced Seismicity
Fracking, a technique used to extract oil and gas from shale formations, has been linked to induced seismicity. By injecting high-pressure fluids into the ground, fractures are created in the rock layers, allowing for the extraction of hydrocarbons. This process can induce seismic activity, including minor earthquakes. The connection between fracking and induced seismicity has raised concerns, especially in densely populated areas where the impact of even small earthquakes can be significant. For instance, the Dutch government has considered limiting or even stopping gas extraction due to the small earthquakes and tremors caused by natural gas extraction in the north of the Netherlands.
Other countries experiencing induced seismicity due to fracking include Canada, the Netherlands, Italy, and England. Each country has responded differently to the challenge, with some adopting traffic light systems to monitor and manage the seismic impacts of fracking operations. These systems require companies to adjust their operations based on the level of seismic activity detected, aiming to minimize the risk of induced earthquakes.

## Rogue Waves

Rogue waves, also known as freak waves, are massive and unexpected waves that can tower above surrounding waves and pose significant dangers to maritime activities. These waves can form due to various natural phenomena, including underwater earthquakes and coastal terrain deformations. Understanding the mechanisms behind rogue waves is crucial for improving maritime safety and predicting potential threats. Underwater Earthquakes
Underwater earthquakes can generate rogue waves through several mechanisms. One primary way is through the displacement of water masses. When an earthquake occurs beneath the ocean floor, it can displace vast amounts of water, creating a sudden surge that forms a rogue wave. The energy released by the earthquake can also generate tsunamis, which, although not technically rogue waves, can cause similarly devastating impacts on coastal areas. Coastal Terrain Deformation
Coastal terrain deformation, such as the uplift or subsidence of landmasses caused by earthquakes, can also contribute to the formation of rogue waves. Changes in the shape of the seabed can alter the flow of water, leading to the amplification of wave heights. For example, if an earthquake causes the seabed to rise near the shore, it can funnel incoming waves into a narrower channel, concentrating their energy and potentially leading to the formation of a rogue wave. Geometry of Location and Depth
The geometry of the location and depth plays a crucial role in the formation of rogue waves. Areas with specific bathymetric features, such as shallow shelves or constrictions, can concentrate wave energy, increasing the likelihood of rogue wave formation. Similarly, the depth of the water affects the speed and energy of waves; deeper waters allow waves to grow taller before reaching shallower depths, where they slow down and increase in height, potentially forming a rogue wave. Example: The Agulhas Current and Rogue Waves
An example of how rogue waves can form due to interactions with coastal geography and currents is the encounter of wave trains with the Agulhas Current off the coast of South Africa. This strong ocean current can cause waves to become even steeper, increasing the likelihood of rogue wave formation. The combination of wave energy, current velocity, and specific coastal geometries can lead to the creation of towering rogue waves that pose significant risks to maritime vessels navigating these waters.

## Tsunami

A tsunami ("harbor wave" in Japanese) is caused by seismic disturbances in the ocean. A common misconception is that tsunamis are simply very large waves, but this is incorrect. Instead, when one has reached land, it gives the appearance that the sea level has risen very rapidly. Tsunamis can flood areas and cause widespread devastation, often killing thousands of people. Tsunamis are commonly called tidal waves, a title discouraged by professional oceanographers because tsunamis are not related to ocean tides in any way.

## Major solar flare

A solar flare is a violent explosion in the Sun's atmosphere with an energy equivalent to tens of millions of hydrogen bombs. Solar flares take place in the solar corona and chromosphere, heating the gas to tens of millions of kelvins and accelerating electrons, protons and heavier ions to near the speed of light. They produce electromagnetic radiation across the spectrum at all wavelengths from long-wave radio signals to the shortest wavelength gamma rays. Solar flare emissions are a danger to orbiting satellites, manned space missions, communications systems, and power grid systems.
Solar flares are common and there are no record of an event that would put life on earth in any considerate danger, that is not to say that they are innocuous. Human societies dependence on electricity, electronic devices and satellites have also made us more vulnerable to a social order collapse due to the disabling effect a strong solar flare would have in the infrastructure we now depend for day-to-day life.
One of the best know effect of solar flares is on the power supply networks, for instance Canada and Finland have added protective devices to their high voltage transformers just for that eventuality. It should be something that a national government should act upon since a nations energy infrastructure is of national security importance, even if in most nations energy is a private enterprise.
There is also a early warning system in place due to the effect solar flares have on satellites, so a major event should be public knowledge before it hits. In personal terms having taken the general steps discussed on Part 1 will suffice, unless the even is so great that the recovery time will erode the fabric of society.

## EMP event

EMP events can occur only result of a EMP weapon discharge.
As with many other catastrophic events, an EMP attack or incident has been also the subject of books and other media, even video games. The computer-animated American science fiction television TV series from 2007 Afterworld covers Russell Shoemaker, the lead character, history across a devastated land, in the portrayed EMP event has not only cause all alternative current utilities to ceased function but has "disintegrated" a large part of the population. It covers interesting subjects like how humanity uses myths to explain away the unknown and permit to build order over a chaotic reality.

## Nuclear event

The word today seems to be evolving beyond nuclear power and nuclear weapons, due to some hard realizations based on experiencing extreme destruction, pollution and the unreliability of the systems especially facing unexpected realities. Something has been learned and we have gone far beyond the bad propaganda from the pre-cold war age into the 21 century.
Nuclear radiation evokes fear and uncertainty, probably the more worrying characteristic is that it is unseen, carried by air and more damaging than virus since the effects can take extremely long time to dissipate and the effects to be noticed, if not in the immediate form of a radiation burn or severe poisoning.
This section will try to cover this subject by providing a short introduction to this important topic and address some of the confusion and even misinformation regarding radiation and radiation poisoning.
Radiation is a physical property of some natural occurring elements. Since matter is, simply put, made up of protons, electrons and neutrons.
The type of element is determined by the number of protons as the number of protons in for any element is fixed, electrons and neutrons vary within some limits. The number neutrons affects the stability of the atom, there is an optimal range of numbers of neutrons needed to keep the atom stable. When you have 2 atoms of the same element but with different number of neutrons they constitute an isotope of that element. If one of the atoms is unstable it then leads to alpha, beta-, beta+ or gamma decay.
One of the more problematic aspects of the lack of public information about radiation effects is the establishing of safety limits and of full disclosure of the dangers. This includes being transparent about contaminated sites, professions and the nuclear economy.
The rem is the most common unit of measure used to gauge radiation damage to human tissue. For instance the International Commission on Radiological Protection recommends evacuation from locations were radiation dose exceeds .1 rem per year. With an exposure of 100 rem or more one will get radiation illness (with similar effects to cancer patients that get radiation treatment, loss of hair, nausea and weakness). A dose of 250 to 350 rem will become life-threatening, if untreated chances of dying are approximately 50%.
Fission is a reaction commonly created in nuclear power stations where unstable isotopes of an element are created from splitting of atoms. Creating unstable isotopes will eventually decay the various decay processes.
Radioactive decay As we have seen there are several types of radioactive decay, each decay will emit:
* alpha decay, means that the unstable atom emits a helium nuclei (composed of 2 neutrons and 2 protons) as it decays.
* beta- decay, occurs for isotopes with an excess of neutrons, in seeking stability neutrons are converted into protons (thereby changing the element) this generates a releasing of electrons and other elementary particles, like neutrinos.
* beta+ decay, may occur, if the atom has enough energy to overcome the mass difference between an proton and a neutron and when the atom nucleus has too few neutrons to remain stable, forcing a conversion of a proton into a neutron and a positron (negative charged electron) that will emit a neutrino.
* gamma decay, is generally a result of a alpha or a beta decay. If the resulting atom is in an excited state, it can radiate a high energy photon to lose some of the excess energy.
Except from a massive solar flare or a pulsar ejection hitting the Earth most other natural ways of getting irradiated beyond normal ranges can only occur due to human action or some controlled activity or repeated exposure. The most probable deadly nuclear events are a nuclear war, terrorist attack, a nuclear facility accident or exposure to nuclear waste. In 2015 Spencer Wheatley and Didier Sornette at ETH Zurich in Switzerland and Benjamin Sovacool at Aarhus University in Denmark, having reportedly compiled the most comprehensive list of nuclear accidents until then calculate the chances of future accidents to be 50/50.

## War

War is conflict, between relatively large groups of people, which involves physical force inflicted by the use of weapons. Warfare has destroyed entire cultures, countries, economies and inflicted great suffering on humanity. Other terms for war can include armed conflict, hostilities, and police action. Acts of war are normally excluded from insurance contracts and disaster planning. Most wars are caused when two political leaders have conflicts with each other's views. Civilians normally have no input on whether a war should be started.
Movies
Books

### Terrorism

Terrorism is a controversial term with multiple definitions. One definition means a violent action targeting civilians exclusively. Another definition is the use or threatened use of violence for the purpose of creating fear in order to achieve a political, religious, or ideological goal. Under the second definition, the targets of terrorist acts can be anyone, including civilians, government officials, military personnel, or people serving the interests of governments.

## Asteroids
### Impact event

Impact events are caused by the collision of large meteoroids, asteroids or comets (generically: bolides) with Earth and may sometimes be followed by mass extinctions of life. The magnitude of the disaster is inversely proportional to its rate of occurrence, because small impactors are much more numerous than large ones. In 2010, 900 1Km asteroids had been cataloged in near heart space (in orbits around 0.983 and 1.3 AU away from the Sun).
This type of event is portrayed in many movies, TV shows and literary works. The TV series of 1999, from the UK, The Last Train, follows the survival of a mixed group of train passengers who have accidentally been cryogenically frozen. It covers items like famine due to ash cover (drop of temperature) and acid rain.

### Air burst
## Gamma-ray burst

A gama-ray burst is a blast of gama radiation, the best known and common generators of such events are pulsars but any passing star cluster within a few thousand light years of Earth could generate a strong enough burst that would result in mass extinction of life on Earth. In fact it is theorized by a team from the University of Kansas in Lawrence led by Adrian Melott in 2003, that such an event may indeed have occurred 440 million years ago, even if so far no proof has been found, but little would be left to identify such event.
In star clusters, gama-ray bursts are generated when a single star explodes or two or more stellar corpses merge. In 2003, a team led by Adrian Melott of the suggested that a gamma-ray burst within a few thousand light years of Earth triggered a mass extinction 440 million years ago. But proof has been elusive. Because these bursts occur when , there is little left to identify the culprit.
A galactic gama-ray superwave can also be a possibility from a massive supernova. Recent discoveries made by Fermi Gamma Ray telescope increases the chance of Earth being hit in what is a recurrent phenomena.
According to Wilfried Domainko of the Max Planck Institute for Nuclear Physics in Heidelberg, Germany (arxiv.org/abs/1112.1792), in globular clusters, massive swarm of active and dead start, the probability based on the number of star clusters in the Milky Way and the rate of gamma-ray bursts in them, that an deadly game-ray busts event will strike Earth is at least once in the past billion years.
The chance that a pulsar will cause damage to the earth is very remote but not inexistent, in fact it is almost a certainty that some pulsars will be targeting the earth from time to time, but because they are so distant little or no impact is felt.

## List of historical disastrous events
### Events sorted chronologically

This section of the book lists disastrous events until the last century. We have intentionally not listed more recent events because they may be still under active dispute, badly attributed, too painful and in general still open to distinct interpretation and requiring further analysis.

#### 20th century
##### 1980s

* 1985 Nevado del Ruiz Lahar disaster - The 'Volcán del Ruiz', had been for more than a century a dormant giant, which travelers in the Bogotá-Cali flights had the pleasure to observe, covered with a large snow cap.
    At 5,389 m (17,780 ft), Nevado del Ruiz is the highest of the Colombian volcanoes in the Central Range of the Colombian Andes.
    Although this volcano had caused lahars in 1595 and 1845, causing hundreds of deaths, the rich valley of Armero under the peak was excellent agricultural land. The town of Armero grew for more than a century, without anyone remembering the old disasters.
    Late in 1984, geologists began to notice small earthquakes and steam eruptions in the volcano. Although a network of monitoring devices was set up on the summit of the volcano, nothing would predict the terrible events that followed a year later.
    In November 1985 the smoke from the summit of Nevado del Ruiz, was plainly visible, but both authorities and scientists alike didn't believe these were the preliminaries of a plynian pyroclastic eruption.
    Despite the warnings, local authorities in Armero and state officials keep saying no eruption would follow, although a risk map was in place.
    On the night of November 13, 1985, at around 3:00 pm there was an explosion and ashes fell over the region, but even then local authorities and priests in Armero asked the people to remain calm in their houses. However at 9:30 pm the volcano, covered with storm clouds, erupted with rock ejection and pyroclastic discharges which melted the snow cap. Melted water and pyroclastic ashes and rocks mixed and produced a series of lahars, mud and rock slides along the rivers.
    Just half an hour short of midnight on November 13, 1985, a massive lahar caused by the eruption of the volcano ran down the Lagunillas river, in central Colombia, and jumped in a 200-high wave of rocks, mud and debris over the town of Armero, 28,000 inhabitants. In the next 10 minutes close to 80% of Armero was destroyed. The toll of both the lahar that hit Armero and other lahars was estimated at 21,000 deaths.

##### 1930s

* 1932 - Ukraine - Black Famine - A Man-Made Famine raged through Ukraine, the ethnic-Ukrainian region of northern Caucasus, and the lower Volga River region in 1932-33. Between 7 and 10 million people, mainly Ukrainians, starved to death.
    Planned by Soviet leader Joseph Stalin, the main goal of this artificial famine was to break the spirit of the Ukrainian peasant farmer and to force them into collectivization. In 1932, the Soviets increased the grain procurement quota for Ukraine by 44%. Soviet law was quite clear - no grain could be given to feed the peasants until the quota was met, aware that this extraordinary high quota would result in a grain shortage leaving Ukrainian peasant unable to feed themselves.
    When some peasants attempted to hide grain from the Soviet Government, Communist party officials with the aid of military troops and NKVD secret police units moved into the area. To insure Ukrainian peasants could not travel in search of food, an internal passport system was implemented to restrict movements.
    While Ukrainians were starving, Ukrainian grain was collected and stored in grain elevators that were guarded by military units & NKVD secret police units.
* Great Depression

##### 1910s

* 1913 - Great Lakes, USA & Canada - Great Lakes storm
* 1912 - Atlantic Ocean - Sinking of the R.M.S. Titanic a Olympic-class passenger liner owned by the White Star Line and built at the Harland and Wolff shipyard. On the night of 14 April 1912, during her maiden voyage, Titanic struck an iceberg at a spot around four hundred miles south of Newfoundland, and sank two hours and forty minutes later in early 15 April 1912. There was no long gash in the ship as expected from the iceberg collision but many tiny gashes that led to the flood of the water. Her fireman compared the sound of the impact to "the tearing of calico, nothing more." However, the collision was fatal and the icy water soon poured through the ship. It became obvious that many would not find safety in a lifeboat. Each passenger was issued a life jacket but life expectancy would be short when exposed to water four degrees below freezing. The sinking resulted in the deaths of 1,517 people, ranking it as one of the worst peacetime maritime disasters in history and by far the most infamous. The Titanic used some of the most advanced technology available. It was one of the most luxurious and largest steamships at the time and was popularly believed to be “unsinkable” - indeed, in a 1910 White Star Line brochure advertising the Titanic, claiming that it was "designed to be unsinkable". It was a great shock to many that despite the advanced technology and experienced crew, the Titanic still sank with a great loss of life. The media frenzy about Titanic's famous victims, the legends about what happened on board the ship, the resulting changes to maritime law, and the discovery of the wreck in 1985 by an American and French team, led by Robert Ballard have made Titanic persistently famous in the years since.

##### 1900s

* 1904 - New York City, USA - General Slocum disaster - The General Slocum was a steamship launched in 1891. It caught fire and burned to the water line in New York's East River on June 15, 1904. Over 1,000 people died in the tragedy, making it New York City's worst loss-of-life disaster until the September 11, 2001 terrorist attacks on the World Trade Center. The Captain, William Van Schaick, and the rest of the crew suffered no fatalities, although the Captain lost sight in one eye due to the fire. There were many acts of heroism among the passengers, witnesses, and emergency personnel.
* 1900 - Texas, USA - Galveston Hurricane

#### 19th century

* 1883 - Indonesia - Krakatoa volcano's eruption

#### 18th century

* 1755 Lisbon, Portugal earthquake - Took place on November 1, 1755, at 9:20 in the morning. It was one of the most destructive and deadly earthquakes in history, killing well over 70,000 people. The quake was followed by a tsunami and fire, resulting in the near total destruction of Lisbon.
    The earthquake accentuated political tensions in Portugal and profoundly disrupted the country's 18th century colonial ambitions. The event was widely discussed by European Enlightenment philosophers, and inspired major developments in theodicy and in the philosophy of the sublime. The first to be studied scientifically for its effects over a large area, the quake signaled the birth of modern seismology. Geologists today estimate the Lisbon earthquake approached magnitude 9 on the Richter scale, with an epicenter in the Atlantic Ocean about 200 km west-southwest of Cape St. Vincent.
    The geological causes of this earthquake and the seismic activity in the region continue to be discussed and debated by contemporary scientists. Some geologists have suggested that the earthquake may indicate the early development of an Atlantic subduction zone, and the beginning of the closure of the Atlantic ocean.

#### 15th century

When the fifteenth century began, the tumultuous times that had caused such destruction and calamity in the previous centuries had not ended. Disasters, as with human evolution, marched on-wards throughout each decade of the new century. Beginning with the first European pandemic of the 15th Century, due to the previous centuries international exploration of foreign lands, and subsequent trade with the indigenous people - in 1506, London was rife with the various fruits and goods acquired from new far-flung lands. One of the cheapest, and therefore, most attainable tastes from these warmer climates came from the influx of Peanuts from South America - the original trade route brought peanuts from Brazil, Chile, Hondolloma (later Peru) all through the Western sea-based silk road, from the South of America, across the Atlantic to South Africa, through the Northernmost tip of Caracas, via tribes and groups of both willing and un-willing natives.

#### 14th century

* Bubonic Plague The black death occurred in almost all of Europe, killing one third of the population. It was caused by a disease carried by fleas (and spread by rats) and transmitted to humans

#### 1st Century

* 79 Destruction of Pompeii & Herculaneum by eruption of Mount Vesuvius