MP3: Finding Ways To Mark Earth Day's 40th

16.04.2010

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Finding Ways To Mark Earth Day\'s 40th MP3

Author and environmentalist Bill McKibben talks about small steps people can take to reduce carbon emissions. Climatologist Kevin Trenberth discusses research suggesting that the Earth's atmosphere is trapping more heat than before, and the mystery of where excess heat is being stored. Source: sciencefriday.com

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