1 The Huffington Post was interested too... - Past Climate Change

The Huffington Post was interested too…

Jeremy Deaton writes:

Life on Earth has survived vast changes in climate, from a warm period 450 million years ago, when most of the present-day United States was underwater, to the last ice age 20,000 years ago, when New England was buried beneath a mile-thick glacier. Though climate change trigged mass extinctions, life went on.

This is something of mystery. Runaway climate change turned Venus into a scorching hellscape, but Earth never grew so hot or cold that life failed to endure. Even in its most turbulent moments, our tiny planet remained a refuge, a blue-green lifeboat adrift against the vast hostility of space. Why?

Scientists have long speculated on the possibility of a planetary thermostat keeping climate change in check. A new study published in the journal Geochemical Perspectives Letters provides the first-ever evidence of its existence.

 

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