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News Headline

An ancient era of global warming could hint at our scorching future

Source
Popular Science

Publication Date
2021-08-16

There was a time when alligators slid through weed-choked swamps near the North Pole. Some 55 million years ago—just around 10 million years after the mass extinction that killed T. rex and most of its kin—the average global temperature sat more than 20°F higher than it does today. Subtropical forests spread to northern latitudes, and mammals thrived in lush new habitats.

Content
https://www.popsci.com/environment/petm-climate-change/