Opinion: Yes, there was global warming in prehistoric times. But nothing in millions of years compares with what we see today
www.latimes.com
When the last ice age ended thousands of years ago, the rate of global warming — which was roughly 10 times slower than what we see today — was rapid enough to wipe out entire species.

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Yet another eloquent explanation of reality from Michael Mann, which will of course be misunderstood or mocked by morons.