A massive increase in carbon dioxide. And you've never had a carbon dioxide spike like is...
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John Veron: A mass extinction is driven by a change in the environment. And we are changing the environment precisely along the lines that can trigger off one of these great catastrophes. There's been five mass extinctions, and they've had different causes, but there's been one common factor in all of them: a massive increase in carbon dioxide. And you've never had a carbon dioxide spike like is happening now
Full Transcript
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A mass extinction is driven by a change of the environment
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and we are changing the environment precisely
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along the lines that can trigger off
00:00:11.051 --> 00:00:12.343
one of these great catastrophes
00:00:15.723 --> 00:00:17.682
There's been five mass extinctions
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and they've had different causes
00:00:20.102 --> 00:00:23.855
but there's been one common factor in all
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a massive increase
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And we've never had a carbon dioxide spike
00:00:33.198 --> 00:00:34.049
like what's happening now
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Movie Summary
A documentary that follows undercover activists trying to stave off a man-made mass extinction.
