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Greenhouse gases hit new record - UN

Greenhouse gases reached a new record level in 2011, the World Meteorological Organization said Tuesday. The body, an agency of the United Nations, said in a statement that there had been a 30 percent increase in the warming effect on the climate between ...http://worldnews.nbcnews.com/_news/2012/11/20/15302748-greenhouse-gases-hit-new-...

EPA: Greenhouse gases are harmful to humans

The conference opened Monday in Copenhagen. The EPA said that the scientific evidence surrounding climate change clearly shows that greenhouse gases "threaten the public health and welfare of the American people" and that the pollutants — mainly carbon ...http://www.nbcnews.com/id/34311724/ns/us_news-environment/t/epa-greenhouse-gases...

EPA: Greenhouse gases threat to human health

Declaring that greenhouse gases are a significant threat to human health, the Environmental Protection Agency has proposed listing carbon dioxide and other greenhouse gases as pollutants under the Clean Air Act, a policy the Bush administration rejected.http://www.nbcnews.com/id/29839267/ns/us_news-environment/t/epa-greenhouse-gases...

Climate panel warns emissions rising, blurs reason

Emissions of carbon dioxide and other greenhouse gases must drop by 40-70 percent by 2050 to keep the global temperature rise below the 2-degree C (3.6-degree F) cap set in U.N. climate talks, the Intergovernmental Panel on Climate Change said. The ...http://www.nbcnews.com/id/54941750/ns/local_news-raleigh_nc/t/climate-panel-warn...

Web results for “greenhouse gases

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Greenhouse gas - Wikipedia, the free encyclopedia

Updated April. 16, 2014

A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the ...http://en.wikipedia.org/wiki/Greenhouse_gas

Emissions | Climate Change | US EPA

Updated April. 16, 2014

Learn about carbon dioxide, methane, nitrous oxide, fluorinated gases, and how human activities add greenhouse gases to our atmospherehttp://www.epa.gov/climatechange/ghgemissions/index.html

Global Warming - What are Greenhouse Gases?

Updated 22 hours ago

One in a series of frequently asked questions about global warming and greenhouse gas emissions.http://environment.about.com/od/faqglobalwarming/f/greengases.htm

Greenhouse Gas Emissions: Greenhouse Gases Overview ...

Updated 11 hours ago

Information on emissions and removals of the main greenhouse gases to and from the atmosphere.http://www.epa.gov/climatechange/ghgemissions/gases.html