The number of mammals, birds, reptiles, amphibians and fish on Earth dropped by 52 percent from 1970 to 2010, according to the World Wildlife Fund's newly released Living Planet Report.
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livescience.com
The number of mammals, birds, reptiles, amphibians and fish on Earth dropped by 52 percent from 1970 to 2010, according to the World Wildlife Fund's newly released Living Planet Report.
The rest of the story
livescience.com
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