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You could win $20,000 to put it into action. Take part in the Green Effect, a new initiative from SunChips and National Geographic to inspire people to take small steps for big change.
Saturday, July 4, 2009 |
Photo: Any Possible Mars Water or Life Is Deep Below SurfaceA new radar study has found that the ice cap is about five million years old, and the underlying bedrock is surprisingly flat and cold, reducing the viable range in which liquid water can exist on the red planet. Image courtesy NASA/Goddard Space Flight Center (Scientific Visualization Studio Mars Orbiter Camera data courtesy of NASA/JPL/Malin Space Science Systems)
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAYWhat's Your Green Idea?
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