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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: Killer Whale Barked Like Sea Lion, Tapes RevealLuna met an untimely death in March after colliding with a tugboat, but he has left an important scientific legacy. An analysis of his underwater calls confirms that he barked like a sea lion and mimicked other noises, showing that killer whales possess the rare ability to learn and produce new sounds. Photograph by Rachael Griffin
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAYWhat's Your Green Idea?
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