Extinction Happens
Wednesday, August 13th, 2008
NOVA ScienceNow producer Julia Cort talks to MIT geologist Sam Bowring about a mass extinction at the end of the Permian period and discusses whether it could happen again. Listen now…
Click here for more: http://www-tc.pbs.org/wgbh/nova/rss/media/novasciencenow-20061108-2.mp3
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