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 halt ...

Paleontologists recognize five big mass extinctions in the fossil record, marked by the loss of a significant number of species in a (geologically speaking) short span of time. Theories to explain ...

Nearly all life that ever existed on Earth eventually disappeared. Five known mass extinctions wiped out up to 96 percent of species in sudden, catastrophic events. While mainstream science favored ...

Add articles to your saved list and come back to them any time. Mankind may have unleashed the sixth known mass extinction in Earth's history, according to a paper released by the science journal ...

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