### fossil fuel:

Natural gas
* Most natural gas contains little or no sulphur and causes less pollution
  - is burnt as a fuel to produce energy
* Most natural gas is produced from the Devonian black shale in Eastern Kentucky
  - in Oklahoma and Texas
* Most natural gases consist of methane
  - contain helium
* Most natural gases have density
  - energy density
* Most natural gases have lower density
  - odor
  - values
  - produce emissions
* Much natural gas collateral product of oil drilling.
* North American continental commodity.
* Some natural gases cause destruction
  - environmental problems
  - contain methane
  - depend on locations
* Some natural gases make heat
  - senses
* accounts for a high percentage of nitrogen production costs
  - nearly half of the country's exports
* appears to be less expensive than oil as a heating fuel.
* are fossil fuel
  - organic matter
  - renewable resources
* built-in fireplaces are efficient space heating devices.
* byproduct of landfills and either escapes into the air or is burned off.
* can be in either a gos or liquid form
  - easily replace fuel oil, and vice versa, in many industrial process applications
  - substitute for petroleum based products only in limited cases
* cheaper and faster way to heat water.
* clean burning fuel
  - source of energy and requires no further refining once mined from the Earth
* clean, efficient fuel for all kinds of heating
  - reliable, efficient and safe
* cleaner burning fossil fuel than coal or oil.
* colorless, odorless gas.
* comes from deposits in the earth also
  - two types of wells
  - into homes through pipes
* competes directly with other fuels for some markets.
* consists mainly of methane , which is the simplest hydrocarbon
  - the hydrocarbon methane
  - primarily of methane, which is the simplest hydrocarbon
  - higher helium concentrations than the atmosphere
* contains compounds that are removed before the gas is sent to customers
  - four atoms of hydrogen for every one atom of carbon
  - methane and burns more efficiently than gasoline
  - methane, propane, and butane
  - no carbon monoxide
* continues to burn once it is lit.
* convenient, economical, environmentally clean fuel that is widely used.
* critical part of California's energy crisis.
* deregulated commodity.
* domestic fuel in the United States
  - while the majority of our gasoline supply is imported gas
* domestically abundant, odorless gas.
* emits much less carbon dioxide than coal or oil.
* exists in a number of countries.
* far cleaner fuel than oil and is therefore increasingly popular.
* fine feed stock for creating plastics and chemicals.
* flows into high-pressure cylinders located in the vehicle.
* fuel and a combustible substance.
* gas or vapor that is also stored in reservoirs below the ground.
* goes up and down, but the sun is free.
* has a delayed ignition
  - higher octane and burns cleaner too
  - narrower flammability range than gasoline
  - far more volume than oil to transport, and most gas is transported by pipelines
* has many advantages for use as a vehicular fuel
  - over petroleum
  - different uses
  - environmental advantages over other fuels
  - no odor
  - the added benefit as the most environmentally attractive fossil fuel
  - thousands of uses
* heats our homes and fires steam generators to make electricity.
* high cost fuel in Japan.
* highly environment-friendly fuel
  - reliable North American energy source
* hydrocarbon, like oil.
* imported from Turkmenistan is the major source of energy for Armenia.
* includes associated and non-associated gas
  - coalbed methane
  - natural, towns and liquefied petrol gas as a reticulated fuel
* is America's natural wonder.
* is abundant and domestic
  - has a much lower price in other parts of the world
  - is widely used for home heating and industrial processes
  - produced domestically, which reduces dependence on foreign oil
  - in North America
  - added to bring the gases in the burner to combustion temperature
  - almost all methane
* is also a fuel for some fuel cells
  - primary raw material for merchant hydrogen production
  - raw material for many products used every day
  - very safe fuel
  - abundant in the North Sea fields
  - an important resource for agricultural purposes
  - clean burning and is environmentally safe
  - far more energy efficient
* is among the cleanest of alternative fuels
  - safest fuels on the road today
* is an abundant domestic energy resource
  - abundant, domestically available product
  - energy source used to heat homes and cook food, among other uses
* is an environmentally friendly source of energy
  - good choice of fuel
  - preferred energy source
  - excellent fuel for conventional and advanced internal combustion engines
  - important input fuel for generating electric power in many parts of the country
* is an important source of clean, efficient energy
  - fuel for California
* is another fossil fuel that is trapped underground in reservoirs
  - kind of fossil fuel
  - as essential to Californian businesses, schools and families as electricity
  - available as a motor fuel in Logan
  - big business worldwide
* is both colorless and odorless making it undetectable to our senses
* is burned as a heat source
  - in the gas turbine
* is burned to fire the combustion turbines, which drive electric generators
* is burned to produce electricity and to cook and heat buildings
  - steam, which drives turbines to generate electricity
* is by far the cleanest-burning of fossil fuels
  - fastest growing primary fuel
  - captured by drilling a hole into the reservoir rock
* is clean and renewable because it can be generated from biomass
  - clean, efficient, and readily available
  - colorless, non-toxic, and has an odorant added
  - colourless and odourless
* is colourless, odourless and non-toxic
  - odourless, non-toxic but inflammable and lighter than air
  - composed primarily of methane and light hydrocarbons
* is considered a cleaner alternative than gasoline or diesel fuels
  - the most environmentally friendly energy source
  - to be a cleaner burning fuel than either oil or diesel
  - consumed in the residential, commercial, industrial, and utility markets
  - converted into fertilizer, methanol, and gasoline blending compounds
  - critical and is used to generate steam for humidity controls and building heat
  - currently the preferred fuel for a growing number of uses
  - dangerously combustible and explosive
  - domestic and readily available to utilities through an existing infrastructure
  - domestically abundant, safe and reliable
  - essentially oil that has been cooked to a higher temperature
  - far cleaner than diesel, but it still pollutes
  - formed by the decay of organic matter
* is formed from decomposed organic plants and animal matter
  - plant matter that has decayed over millions of years
  - in the same way as oil, from the remains of marine microorganisms
* is found in deposits a few hundred meters underground
  - many states and even off the coasts
* is found near Douala, and offshore deposits of petroleum are exploited
  - oil in the ground
  - on the top of the pools of oil
  - under the earth, often in oil fields
  - fundamentally different than oil shale, etc
  - good for the environment
  - hemispheric
  - ignited and burned
  - in short supply, expensive and produces carbon dioxide when burned
  - inherently cleaner than other fossil fuels
  - known to produce toxic nitrogen oxides when it burns
* is less combustible
  - dense, even at higher pressures
* is less expensive than electricity
  - regular gasoline
  - traded internationally than oil
* is lighter than air and rises as does smoke
  - tends to dissipate if leaked
  - and, when exposed to the air, usually dissipates quickly
  - air, non-toxic and contains no poisonous ingredients
  - propane gas and emits hydrocarbons when burned
* is made of mostly of methane, with some other, similar carbon-based gases mixed in
  - up mostly of a gas called methane
* is mainly a methane gas found in conjunction with crude oil
  - methane, the simplest and cleanest burning hydrocarbon
  - measured in cubic feet, a volume unit
* is more economically viable than alternative feedstocks, such as naphtha
  - environmentally friendly and safer to use than most other fuels
  - naturally odorless and invisible
  - neither carcinogenic nor caustic
  - no longer the scarce, premium fuel that is too valuable to be burned in a boiler
  - non-renewable, meaning that supplies are limited
  - non-toxic, colorless, tasteless, and odorless
  - nontoxic
  - now a world commodity
  - odorless, so an odorant is added to make it easier to detect leaks
  - on a bell curve of depletion similar to oil
  - one non-renewable energy source
* is one of a limited number of fuels used in the generation of electricity
  - the best energy values per dollar
* is one of the cleanest and abundant fuels available
  - burning fuels available
  - cleanest-burning fuels available today
* is one of the most abundant energy sources in North America
  - attractive fuels for fuel cells
  - dangerous substances in the home
  - economical fuel sources
* is one of the safest and most reliable fuels available
  - energy sources available to homeowners and businesses alike
  - forms of energy
  - world's safest sources of energy
  - way of heating houses and stoves
  - popluar, but, sometimes the pressure is limited
  - preferred as a fuel for electric power over oil and coal for environmental reasons
* is primarily methane with small amount of ethane , propane , and butane
  - methane, with small amounts of other hydrocarbons
* is produced by both crude oil and natural gas wells
  - from wells located primarily in the Gulf States and Canada
  - pumped, just like oil, from wells that tap into pockets below ground
  - recovered from the ground by drilling
  - relatively clean burning
  - safe for the environment
* is safer - less of a fire hazard than gasoline
  - said to be one of the principal solutions to Americas air pollution problem
  - seen as a transition fuel
  - sent through a series of pipes until it comes to our homes, schools and businesses
* is still a fossil fuel, but it's cleaner than oil and coal
  - one of the least expensive residential energy sources
* is stored in a container that survives impact better than gasoline tanks
  - depleted fields , salt caverns , and aquifers
  - such a fuel
  - supplied into a very competitive energy market
* is the basic energy source for most of the alternatives to petroleum
  - feedstock for producing nitrogen fertilizer
* is the cleanest -burning, commercially available alternative fuel
  - and most efficient fossil fuel
* is the cleanest burning alternative motor fuel commercially available today
  - transportation fuel available today
* is the cleanest burning fossil fuel - it provides heat without smoke
* is the cleanest burning of all fossil fuels
  - our fossil fuels
  - of the fossil fuels
  - cleanest, safest and most efficient fossil fuel
  - fuel of choice because it is clean, efficient, and relatively inexpensive
* is the fuel of choice for electricity generation in North America
  - new electrical generating plants
  - the overwhelming majority of new home buyers
  - the future
  - used in many electric generating facilities
  - gaseous component of coal and oil formation
  - least carbon-intensive fossil fuel
  - major component of nitrogen fertilizer
* is the most common fuel for cogeneration
  - commonly consumed energy resource in manufacturing
  - competitive form of electrical generation right now
  - efficient and environmentally sound energy source among the fossil fuels
  - environmentally friendly fossil fuel
  - next most used energy source, followed closely by coal and nuclear far behind
  - predominant fuel on the margin for electric generation in California
* is the preferred mode of home heating in the Midwestern states
  - source of energy for most new generating capacity
  - primary raw material for nitrogen fertilizer
  - prime mineral resource of Bangladesh
  - product of biologic decom- position of plant and animal remains of the past
  - safe, efficient, economical choice for water heating
  - safest fuel available today
  - source for new quick-start power plants in numerous areas of West Virginia
  - third largest primary source of energy, after coal and oil
  - today an important source of energy world-wide
  - today's environmental energy choice
  - touted as the fuel of the future
* is transported by pipeline to urban areas or industrial centers
  - from wells to urban centres, where it is used by large pipelines
  - trapped in rock formations that can stretch for kilometers
  - turned into carbon monoxide and hydrogen, which reacts to make electricity and heat
  - used as a feedstock in the production of N fertilizers
* is used as a fuel and for the manufacture of chemicals
  - to spin a turbine which in turn runs a generator to make electricity
  - both as a general energy source and as a fuel in many industrial processes
  - by the vast majority of brick makers today
  - extensively in residential, commercial and industrial applications
  - in heaters as well as special converted engines
* is used in the production of ammonia, used in fertilizers to supply nitrogen
  - residential and commercial sector for home heating and cooking
  - salt industry to produce steam for granulated salt production
  - mainly to produce electricity in Thailand
* is used mostly for powering irrigation pumps and crop drying
  - in industry, where it powers factories and fuels machines
  - on campus for heating buildings and water
* is used to dry potato chips and automobile paint finishes
  - fire a boiler to generate process sTEAM
* is used to heat buildings, cook food, and provide energy for industries
* is used to heat the homes of many people
  - swimming pool and whirlpool as well as water for showers
* is used to make ammonia and molten sulfur is used to make sulfuric acid
  - that becomes nitrogen fertilizer
  - produce most of the synthetic nitrogen that farmers use
  - regenerate the desiccant properties of a desiccant-impregnated wheel
* is very abundant in the United States and environmentally friendly
  - efficient and offers more comfort and convenience than other energy sources
  - viewed as the transition fuel to a renewable hydrogen economy
* liquid that makes machines work and heats houses.
* looks likely to be the fuel of choice for power plants for the future.
* major component of anhydrous ammonia.
* market commodity and responds to the basic supply and demand equation.
* mixture of hydrocarbons with small molecules
  - methane with other hydrocarbon gases
  - that is used as a fuel source
* more efficient, less expensive fuel than electricity, needed for heat pumps
  - recoverable resource than oil in tundra eco-regions
* much cleaner fuel than gasoline.
* naturally occurring form of energy and is environmentally friendly.
* occurs in reservoirs beneath the surface of the earth.
* offers an economical alternative to electric and propane
  - significant benefits compared to gasoline
* plays a key role in our clean energy future.
* plays an important and growing role in UK energy supply
  - increasingly important role, while the use of oil is decreasing
* popular fossil fuel because it burns cleanly.
* powers a turbine that generates electricity.
* primary feed stock in the production of anhydrous ammonia, a nitrogen fertilizer.
* produced from coal is indistinguishable from all other natural gas.
* promising transportation fuel.
* provides for the bulk of space heating
  - heat to our homes during winter
  - nearly a quarter of the country's energy
  - one-fifth of all the energy used in the United States
  - one-fourth of the total energy used in the United States
  - savings on operating and maintenance costs of vehicles
* ranks number three in energy use, right after petroleum and coal.
* raw material to make ammonia for agricultural fertilizer.
* releases the least amount of carbon dioxide.
* remains one of the most efficient, reliable and clean energy sources
  - the predominant fuel for space heating
* requires even more pressure than propane.
* safe and environmentally preferred energy source
  - energy alternative
* safe, clean burning alternative to electric and propane
  - non-toxic gas
* safer vehicle fuel than either gasoline or propane.
* used to be less expensive than oil, but it now costs nearly twice as much.
* very clean fuel, especially when compared to coal and oil.
+ Natural gas vehicle, Natural gas, What is it?: Green vehicles
  * Natural gas is a mixture. It consists mainly of hydrocarbons. The main component is methane. Natural gas is often found in the ground together with petroleum.
+ Suicide prevention, Interventions, Lethal means reduction
  * Making it hard for people to get dangerous items can lead to less suicides. Putting up fences at bridges and cliffs reduces suicides. One example of making dangerous items less available is coal gas in the United Kingdom. Until the 1950s, the most common way of committing suicide in the UK was poisoning by inhaling coal gas. In 1958, natural gas was used instead. Natural gas is much less dangerous. Br J Prev Soc Med'.
+ Trinidad and Tobago: Caribbean Community
  * The country has some natural gas beneath the ground and underwater in the ocean. Natural gas is a liquid that makes machines work and heats houses. Also, many people called tourists visit the islands. They take pictures and learn about the islands.
  * Most natural gas is burnt as a fuel to produce energy. It burns with a clean blue flame. It causes little pollution.
  * Natural gas is burned to produce electricity and to cook and heat buildings. It is also used as fuel for natural gas vehicles for transport. When natural gas is burned in a power station it boils water into steam that spins a steam turbine that turns a generator to make electricity. Some power stations use natural gas in a gas turbine.