About 250 million years ago, Earth faced its greatest catastrophe. The End-Permian Event wiped out more than 80% of ocean species and devastated life on land. While the mass extinction’s effects ...

Most people think of crocodilians as living fossils—stubbornly unchanged, prehistoric relics that have ruled the world's ...

That happened during two mass extinction events. The first was during the end-Triassic, about 201.4 million years ago. The ...

For scientists and conservationists, knowing how species survive planetary crises can lead to more effective protection of vulnerable species.

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing over a period of roughly 30 million years, but that would come to a ...

Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event ... Starting around 145 million years ago, this ...

It spans from 145 million to 201 million years ago ... have put the normal extinction rate for the planet at between 0.1 and 1 species per 10,000 species/100 years. A mass extinction event ...

The idea that extreme heat could one day cause a mass extinction and end the dominance of humans is not as farfetched as it ...

SALT LAKE CITY — Earth has experienced at least five "mass extinction" events ... around the time of the end-Triassic extinction, about 201 million years ago, and the end-Cretaceous extinction ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that ... factor in the Late Devonian extinction event 372 million years ago and one at the end of the Late Ordovician ...