Episode: 2014 Biodiversity Lecture 1


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2014 Biodiversity Lecture 1

"Learning from Past Extinctions" by Anthony D. Barnosky PhD
The fossil record contains evidence of five mass extinctions, when more than 75 percent of species went extinct. Mammals are a key group for comparing past and present extinction rates. Many living species are threatened, but there is still time to avoid a sixth mass extinction.



HHMI's Holiday Lectures on Science
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