### substance:

Dust
* All dust is dust, And blood is dust.
* More dust is found in near the equator.
* Most dust absorbs light.
* Most dust causes allergies
  - respiratory problems
  - upper respiratory problems
  - clouds lower temperature
  - comes in contact
* Most dust contains excretion
  - rodent excretion
  - such substances
  - enters atmospheres
  - has origins
  - irritates lungs
  - is contributed by the mantle rock of dry regions
  - makes coughs
  - mites cause respiratory problems
* Most dust mites die in low humidity levels or extreme temperatures
  - when exposed to low humidity levels or extreme temperatures
* Most dust mites feed on dead skin
  - survive on diets
  - reduces visibility
  - reflects starlights
* Much dust contains microscopic arachnids called dust mites.
* Some dust affects climates
  - human health
  - blocks sunlight
  - carries antigens that cause severe irritation to the respiratory tract and lungs
* Some dust causes diseases
  - lung diseases
* Some dust comes from powder
  - white powder
* Some dust consists of fungal hyphae
* Some dust contains fiber
  - viruses
  - enters earth
  - forms disks
* Some dust leads to diseases
  - respiratory diseases
* Some dust mites live in bedrooms
  - homes
  - towels
* Some dust mites prefer environments
  - humid environments
  - survive years
  - radiates energy
  - reduces photosynthesis
* Some dust reflects light
  - storms cause damage
* Some dusts are mixed with other dry insecticides
  - contain conventional insecticides, while others contain no organic chemicals
* Use small paintbrushes to dust cracks and crevices in telephones, stereos, etc.
* absorbs blue light more than red light and thus makes stars appear reddish
  - both ultraviolet and visible light and reradiates it as far-infrared radiation
  - light and re-emits it as infrared radiation
  - moisture, which also plays a role in failure
  - starlight, thus heating the interstellar medium
  - the optical and ultraviolet light of stars and re-emits it as infrared radiation
  - visible starlight and reradiates it at much longer wavelengths
* accelerates wear and tear in all mechanical systems.
* accumulates in finger nails and carries the infection.
* acts as an insulator from holy energies
  - that prevents the escape of heat
  - insulator, holding the heat inside the tube
  - condensation nuclei and allow matter to accumulate
  - insulation and hinders proper cooling
* adheres to the sheet by static electricity.
* affects farmers who are working on dry fields or windy days.
* aggravates allergies which lead to headaches.
* allergens and mold and mildew thrive on humidity.
* also absorbs toxic pollutants from the indoor and outdoor environments
  - causes extinction
  - encourages mites that attack the foliage and can affect the berries
  - forms when painted surfaces bump or rub together
  - interferes with herbicides
* are best for treating voids
  - common in livestock operations and present a hazard to animals and humans
  - dry powders ready for use
  - more effective when applied early in the day while the dew is still on the plants
  - particularly effective for treating nest galleries
  - pesticides formulated on particles designed for dry application
  - solid particles often generated by some mechanical or abrasive activity
* are usually more hazardous than sprays
  - to bees than sprays
* builds up and keeps the heat from escaping.
* bunnies in different stages of growth.
* by-product of laminate floor manufac.
* can accumulate in carving, cracks and grooves and make wood look dark and unattractive
  - electrical components
  - affect the output quality of any printer
* can also affect performance
  - irritate the adults
  - make people with asthma experience wheezing, coughing and shortness of breath
* can also obscure oncoming vehicles
  - our view of a nebula
* can be a problem for gas permeable wearers in dusty environments
  - skin irritant
  - an explosion hazard when exposed to heat or flame
  - extremely hazardous when it contains asbestos, lead or high-protein materials
  - highly explosive
  - carry gases and odors
* can cause drying, cracking and scaling
  - fatigue and headaches
  - irritation to the eyes, nose, throat, lungs, and skin
  - many problems for people that suffer from allergies
  - silicosis
  - the laser eye to skip, and scratches can cause a loss of audio quality
  - even obscure entire galaxies at visible wavelengths
  - hang in the air for years
  - have thousands of parts per million lead by weight
  - impair breathing for people and animals, and make travel hazardous
  - ionise and suspend on a dry day, creating drift
  - irritate eyes, nose, throat and mucous membranes of the respiratory tract
* can irritate the lungs and aggravate asthma symptoms
* can make an animal track look one way, sand or mud another
  - the eyes tear, feel gritty, or turn red
  - mask star formation in the present Universe, too
  - occur from dried and flaking paints
  - only form at temperatures below a few thousand degrees
  - reach as high as six miles above the surface and settles very slowly
  - restrict air flow and increase operating costs
* can settle on floors, walls and tables
  - walls, and tables, and can cause problems
  - stress the respiratory system, by carrying adsorbed gases deep into the lungs
* carried downwind from cities and industry can increase rain in city shadows.
  - mechanical irritation
* come from grinding and machining of metals.
* comes from other sources as well
* common cause of allergies, but it's actually the dust mites that are the culprits
  - occurrence in any activity on the forest
  - source of dangerous levels of lead and cadmium
* consists of very small pieces of solid matter distributed diffusely through space.
* constrict the lungs.
  - pollen
* contributes to air pollution.
* covers protect heads and automatically release with water pressure.
* created from the remodeling of an older home also can be a source of lead contamination.
* crucial component of the martian greenhouse effect.
* devils form when the weather is clear, hot, and dry.
* devils, with dust storms, are the main agent of removal and deposition of dust on Mars.
* drift more than sprays.
* driven from a comet's nucleus reflects sunlight as it travels through space.
* dry glaze over portion of ware previously coated with liquid size.
* emits in the infrared.
* encourages dust mites.
* ends with fungicide or activated charcoal.
* enter under the skin and climb vision.
* fills crater bottoms and piles up high around rocks the size of small office buildings.
* fine powder two inches thick on the road and all the trails.
* flies up, and all the moisture in the air immediately vaporizes.
* floats in the air.
* generated during grinding, handling or storage can pose an explosion hazard.
* great condensation nucleus.
* have a tendency to cake or crust when they get damp.
* helps collect enough matter to form planets
  - to remove old oil
* hitting the Earth has the same cycles as the ice ages.
* irritates eyes
* is abrasive so infrequent or improper dusting can create a worn, dull surface over the years
  - also a continuous problem, and many people suffer from allergies and sinus trouble
  - blown away from the comet's nucleus by the pressure of sunlight
  - dirt
  - everywhere in Tucson
  - flammable
  - ingested through imperfect air filters
  - irritant to skin due to high alkalinity
  - kept down by wetting painted surfaces before they are worked on
  - light, but it does settle because it is heavier than air
* is located in air
  - attics
  - beds
  - boxs
  - carpets
  - cellars
  - closets
  - corners
  - desktops
  - drawers
  - freeways
  - fridges
  - ground
  - libraries
  - lofts
  - moons
  - orbits
  - plates
  - rugs
  - shelfs
  - skies
  - television
  - windowsills
  - made up of skin, hair, feed and fecal materials
  - magnetic and ultra- fine, so it gets into everything
  - mixed with the gas
  - mobs
  - more mobile than coarse particulates and unhealthy almost regardless of composition
  - most likely to be raised when litter is being removed or raked over
  - much more than common dirt
* is often a problem in Washington State, especially in dry weather
  - heavy in the desert environment and also dries out the nasal membranes
  - one of the least studied aspects of blasting
  - particulate matter
  - readily visible as dark streaks
  - reduced since unconscious birds are placed on the evisceration line
  - small particles of dirt
  - soil without life promising famine
  - spread much thinner than sand and covers a much larger area
  - such an air particle that alters the colors of a sunset
  - swept around from the dayside to the nightside by the expanding gas flow
* is the condemned urban equivalent of snow, or sand
  - most common year round allergy
  - smallest particle
  - uniform on the wheel drive surface
* is very rare
  - small and takes a long time to accumulate
* is, after all, pollution.
* isn t just an accumulation of fine dirt.
* kill existing pests and make surfaces inhospitable to new arrivals.
* kills power supplies.
* leaves with eye shadow.
* major source of indoor air pollution.
* mites Many people are allergic to dust mites
  - with asthma are allergic to dust mites
* mites and allergies
  - animal dander - eye, nose, and throat irritation, asthma
  - cat dander are two of the most potent allergens
  - mold grow best in damp areas
* mites and other insects can thrive in sofas, stuffed chairs, carpets and bedding
  - thrive in stuffed sofas and chairs, carpets, drapery and bedding
  - pests such as cockroaches also worsen allergies
  - respiratory disease in calves
  - roaches love high-humidity homes
  - their waste products are the most common allergens in indoor air
  - as well as other allergens thrive on high humidity
  - belong to the family of eight-legged creatures called arachnids
* mites can lurk in carpeting, upholstery and ventilation systems of cars
  - trigger asthma attacks
  - collect in bedroom carpets and bedding
  - common indoor allergen
  - feed off our dead skin cells
  - hide deep in carpets, upholstery, furniture, bedding, clothing, and closets
* mites like moisture and high humidity
  - to eat dead skin from pets and humans
  - live and multiply easily in warm, humid places
* mites live in bedding, carpets, stuffed furniture, old clothing and stuffed toys
  - upholstery, and carpets
  - carpeting and bedding
  - carpets, bedding and curtains
  - fabrics and carpets and are common in every room of the house
  - rugs and carpets, sheets, mattresses and pillows, and upholstered furniture
  - rugs, carpets sheets, mattresses, pillows and upholstered furniture
* mites love central heating
  - to curl up in carpets and do whatever twisted things dust mites do
* mites love warm, damp mattresses
  - humid areas filled with dust
  - obtain water by actively absorbing it from the ambient air
  - or pet allergies often cause morning congestion that lasts all year long
  - particularly like rugs, beds and pillows
  - primarily feed on dead skin shed by humans and other animals
* mites survive and thrive on minute particles of human skin
  - on a diet of dead skin, bacteria, fungi and viruses in the environment
* mites thrive in a humid environment
  - on warmth and humidity
  - usually populate stuffed animals, like pillows
* mites, close relatives of ticks and spiders, are too small to see without a microscope.
* mites, cockroaches and animal dander eye, nose, and throat irritation, asthma
  - cockroaches, mold and pollen are all triggers to asthma attack
  - grasses and moulds top the list of environmental, or atopic, allergies
  - microscopic creatures related to spiders, thrive on moisture
  - mold and mildew are the most common allergens that cause allergies
* mites, mold, and pets are the major indoor allergens
  - pollution and cockroach parts often trigger asthma attacks
  - pet dander and molds are culprits that can set off allergy attacks indoors
  - the primary cause of dust allergy, are microscopic organisms found in homes
* obscures our view of the central part of the Milky Way at visible wavelengths.
* often builds up during the winter months
  - collects in smoke detectors, and it can cause the smoke detector to give a false alarm
* often contains harmful endotoxins
  - microscopic mites, which live in bedding, furniture, and carpets
* particles cause problems for satellites.
* particles in comets vary in size from pebbles to specks smaller than the eye can detect
  - the expanding cloud scatter and reflect the starlight making the beams visible
  - on optics and film emulsion buildup on platens
  - scatter more light in a direction away from the sun than back toward it
  - that affect the lungs are so small that they are invisible to the naked eye
* pervades much of space, around newly born stars and between stars.
* plants with diatomaceous earth.
* plays a crucial role in the atmosphere by acting as nucleation sites for cloud growth.
* plumes against the clouds or projected from the limb.
* powerful allergen which accumulates easily when homes are closed up during the winter.
* protective coating for fine furniture
  - covering for furniture
* provide slightly longer residual control than aerosols.
* raised by heavy trucks on haul roads is reduced by water spraying.
* rapidly causes an unsightly build up.
* reddens star light passing through it by scattering the blue light in all directions.
  - sunlight, causes cooling
* replaces sand.
* retains heat and causes intermittent failures and errors.
* returns to dust.
* rings around a star suggest that unseen planets lurk there.
* rising in dry weather sign of approaching change.
* settles down, where the vacuum can trap it.
* solid that's made up of lots of other kinds of solids.
* spores on the medium.
* stays on things because gravity holds it.
* supplies the nutrients that react with moisture to produce mold, dust mites and bacteria.
* swirls at first, then condensation swirls.
* takes place over five days, split into morning, afternoon, and evening.
* tends to absorb and selectively scatter blue light more effectively than red
  - build up over time, and pain if left uncontrolled
* term given to the smallest leaf particle.
* turns to mud, mud turns to slop, and slops turns to snow.
* very effective absorber and re-radiator of optical and ultraviolet light.
* wipes only measure lead in surface dust.
+ Global warming, Temperature changes, Dust and dirt: Energy :: Climate change :: Air pollution
  * This big dirt is still very small. It's about the width of a human hair. The big dirt does not stay in the air for years though because rain hits it and brings it to the surface. It actually only stays in the air for about 7 days. But this is still a long time, and can cause changes in the temperature of the Earth. Dust can hang in the air for years.