This image provided by Stanford University biologist Scott Loarie, shows an American Pika in Aug. 2008 in Desolation Wilderness in El Dorado County, Calif., near Lake Tahoe. Animals across the world are fleeing global warming by moving north and up twice as fast as they were less a decade ago, a new study says. About 2000 species examined are moving away from the equator at an average rate of more than 15 feet per day, about a mile per year, according to a giant study of new and old research in the journal Science published Thursday. Species are also moving up mountains to escape the heat, but more slowly, averaging about four feet a year. (AP Photo/Scott Loarie)

Associated Press
This image provided by Stanford University biologist Scott Loarie, shows an American Pika in Aug. 2008 in Desolation Wilderness in El Dorado County, Calif., near Lake Tahoe. Animals across the world are fleeing global warming by moving north and up twice as fast as they were less a decade ago, a new study says. About 2000 species examined are moving away from the equator at an average rate of more than 15 feet per day, about a mile per year, according to a giant study of new and old research in the journal Science published Thursday. Species are also moving up mountains to escape the heat, but more slowly, averaging about four feet a year. (AP Photo/Scott Loarie)
This image provided by Stanford University biologist Scott Loarie, shows an American Pika in Aug. 2008 in Desolation Wilderness in El Dorado County, Calif., near Lake Tahoe. Animals across the world are fleeing global warming by moving north and up twice as fast as they were less a decade ago, a new study says. About 2000 species examined are moving away from the equator at an average rate of more than 15 feet per day, about a mile per year, according to a giant study of new and old research in the journal Science published Thursday. Species are also moving up mountains to escape the heat, but more slowly, averaging about four feet a year. (AP Photo/Scott Loarie)
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