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Study maps 15 years of carbon dioxide emissions on Earth

World leaders face multiple barriers in their

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Long commute times and urban areas that leapfrog over open space make it harder for people to

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The Markham Ice Shelf, a massive 19-square-mile platform of ice, broke away from Ellesmere Island...

MOFFETT FIELD, CA -- Beginning next summer, scientists from NASA, other government agencies,...

Biofuels hold promise as environmentally friendly sources of renewable energy, but which ones

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