6/3/2014
New report suggests Earth on the brink of a great extinction
New report suggests Earth on the brink of a great extinction
According to new research published in the journal Science this week, plant and animal extinctions are happening at a rate one thousand times greater than before humans walked the Earth. Stuart Pimm of Duke University joins Hari Sreenivasan to discuss how extinction rates are determined and what can be done to help set conservation priorities.
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