FILE - In a July 11, 2008 file photo, a trio of humpback whales break the surface of the water as they work together in a group behavior known as "bubble feeding" off the coast of Cape Cod near Provincetown, Mass. Efforts to save endangered animals are making a measureable difference, even as a fifth of the world's backboned species _ mammals, birds, reptiles, amphibians and fishes _ are threatened with extinction, a huge new analysis says. (AP Photo/J. Scott Applewhite, File)
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