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Mammals May Be Nearly Half Way Toward Mass Extinction

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avatar Mammals May Be Nearly Half Way Toward Mass Extinction
December 17, 2009 08:10PM
ScienceDaily (Dec. 18, 2009) — If the planet is headed for another mass extinction like the previous five, each of which wiped out more than 75 percent of all species on the planet, then North American mammals are one-fifth to one-half the way there, according to a University of California, Berkeley, and Pennsylvania State University analysis.

http://www.sciencedaily.com/releases/2009/12/091217115838.htm
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