Who do you want to see receive $20,000 to put their Earth-saving idea into action? Check out the ten Green Effect finalists, and until July 20 you can vote—up to once a day—for your favorite idea!
Friday, July 10, 2009 |
Friday, July 10, 2009 |
Photo: Melting Snow Created Mars Gullies, Expert SaysA new study suggests that gullies elsewhere on the red planet were formed when recurring climate changes caused snow to fall and then melt in the relatively recent past. Image courtesy NASA/JPL/University of Arizona
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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