The State Department is considering whether to issue a permit for a controversial oil pipeline from Canada to the Gulf Coast. Environmentalists oppose the project, but defenders say jobs are at stake. NPR's Jeff Brady reports.
In 1998, two teams of physicists looking at distant supernovae noticed something surprising--the supernovae were not only moving outwards but also accelerating. These observations have won three Americans the 2011 Nobel Prize in physics. Nobelist Adam Riess discusses how physicists are now looking at the universe.
The greenhouse gas emissions from the 55 million tons of food the U.S. food wastes every year add up to to 135 million tons a year. Some foods, like beef, have a much bigger impact on the climate than others.
Officials in California caution that rising sea levels could inundate the shoreline of San Francisco Bay, including the San Francisco International Airport and several Silicon Valley companies. A state planning agency votes on rules that would limit new construction around the bay on Thursday. That's inspired a fierce battle with the business community.
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