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Coal

en.wikipedia.org/wiki/Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder ...

Coal - U.S. Energy Information Administration (EIA)

www.eia.gov/coal/

The total output over a 12-month period of U.S. electric generators fueled by natural gas surpassed those fueled by coal for first time in January 2016.

Coal Explained - Coal - Energy Explained, Your Guide To ...

www.eia.gov/energyexplained/?page=coal_home

Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is classified as a nonrenewable energy ...

World Coal Association

www.worldcoal.org/

Welcome to World Coal Association, where you'll find information about coal, the environment, sustainable development, coal industry news, global coal facts ...

Coal - The New York Times

www.nytimes.com/topic/subject/coal

News about coal. Commentary and archival information about coal from The New York Times.

Resources | World Coal Association

www.worldcoal.org/resources

Browse our range of material on the global coal industry. Subscribe for the latest coal industry updates. Email address *. Sign up now. Subscribe for the latest ...

Coal - International Energy Agency

www.iea.org/topics/coal/

Coal is a variety of solid, combustible, sedimentary, organic rocks, formed from vegetation that has been consolidated between other rock strata and altered by ...

Beyond Coal | - Sierra Club

content.sierraclub.org/coal/

This map is comprised of data collected and maintained by the Sierra Club Environmental Law Program, and is part of the Club's ongoing campaign to wean the ...

Coal | Department of Energy

www.energy.gov/coal

Coal. Coal is the largest domestically produced source of energy in America and is used to generate a significant chunk of our nation's electricity. The Energy ...

Coal | Environment | The Guardian

www.theguardian.com/environment/coal

Burning coal for gas in UK seabeds would flame pollution, says report ... Guardian Environment Network UK coal power station in breach of EU air pollution law.

Answers
Coal is a combustible black or brownish-black sedimentary rock composed mostly of carbon and hydrocarbons. It is the most abundant fossil fuel produced in the United States.
The energy in coal comes from the energy stored by plants that lived hundreds of millions of years ago, when the Earth was partly covered with swampy forests.