25 Jan 2011:
Climate Benefits of Natural Gas
May Be Overstated, U.S. Report Says
A new U.S. study casts doubt on the contention that natural gas delivers significantly cleaner energy
than other fossil fuels. While natural gas advocates have said that it generates 50 percent less greenhouse gases
than coal, that calculation does not include the methane and other pollutants emitted during the extraction of natural gas, according to the analysis by the U.S. Environmental Protection Agency (EPA). The study finds that the amount of methane that seeps from loose pipe fittings and gas wells is twice earlier estimates, and the emissions released during the controversial drilling process known as hydraulic fracturing are 9,000 times higher than previously reported, according to the Web site ProPublica. All told, natural gas may be just 25 percent cleaner than coal, according to the analysis. As U.S. lawmakers tackle a new energy bill, the latest analysis might weaken the political argument in favor of investing billions in natural gas as a cleaner, domestic energy alternative.
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A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
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An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
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Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.