Two hundred and fifty-two million years ago, a series of Siberian volcanoes erupted and sent the Earth into the greatest mass extinction of all time. Billions of tons of carbon were propelled into the ...

Therapsids, the ancient ancestors of mammals, were integral to Earth’s ecosystems during the middle to late Permian period. (CREDIT: Bruce Aleksander / Flickr) Therapsids, the ancient relatives of ...

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Palaeontologists now demonstrate that ancient mammal relatives, known as therapsids, adapted to drastic climate change by having shorter life expectancies. Two hundred and fifty-two million years ago, ...