Collapse driven by warming

Many people point out that the Earth's climate has always changed.

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While geologically true, it is hardly a comfort.

Looking back at our planet's history, every time the climate shifted as abruptly as it is today, it wasn't a “natural cycle” to be ignored, it led to a mass extinction.

Four of the 'Big Five' mass extinctions were driven by rapid global warming.

The most terrifying was the Great Dying 252 million years ago.