Astronomy Cast EP. 220: Mass Extinction Events

Article written: 9 May , 2011
Updated: 18 Jan , 2016
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The Earth seems like a safe place, most of the time. But we have evidence of terrible catastrophes in the ancient past, times when almost all life on Earth was wiped out in a geologic instant. What could have caused so much devastation? And will something like this happen again?

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Mass Extinction Events shownotes and transcript.

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