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Articles on Prehistoric climate

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Recent heat waves underscore Earth’s new climate state. Sean Gladwell via Getty Images

Is it really hotter now than any time in 100,000 years?

Long before thermometers, nature left its own temperature records. A climate scientist explains how ongoing global warming compares with ancient temperatures.
Melting Antarctic ice can trigger effects on the other side of the globe. NASA/Jane Peterson

How Antarctic ice melt can be a tipping point for the whole planet’s climate

The climate secrets contained in an ancient tree that lived through abrupt global change reveal how Antarctica can trigger rapid warming in the north by dumping cold water into the Southern Ocean.

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