科学家过去普遍认为，地球已进入第六次物种大灭绝（The Sixth Mass Extinction），大批物种的消失速度比自然状态下的消亡速度高出100倍。美国亚利桑那大学一项最新研究对此提出反驳，认为有关说法并不符合目前证据，物种灭绝速率大约在一个世纪前达到峰值，此后总体呈下降趋势。

New research finds extinction rates have been declining for a century, challenging assumptions of an ongoing mass extinction.

A mass extinction event is already underway. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The present extinction rate of life on Earth doesn't ...

If you’re an animal living through a mass extinction, it’s best to be one that’s found a unique way to make a living. A new analysis of the species that lived or died out in the wake of the asteroid ...

Meara covers streaming service news for CNET. She graduated from the University of Texas at Austin with a degree in journalism. When she's not writing, she likes to dote over her cat, sip black coffee ...

The Cretaceous-Paleogene mass extinction, occurring approximately 66 million years ago, represents one of the most dramatic biotic crises in Earth’s history. It is marked by the abrupt disappearance ...

In the past half-billion years, Earth has been hit again and again by mass extinctions, wiping out most species on the planet. And every time, life recovered and ultimately went on to increase in ...

(CNN) — No species lasts forever — extinction is part of the evolution of life. But at least five times, a biological catastrophe has engulfed the planet, killing off the vast majority of species from ...

The late Devonian extinction is one of the five major extinction events to have occurred on Earth. It's not unusual for scientists to argue over what causes a mass extinction event -- of the five, the ...

Researchers at Yale and Princeton say the scientific community sorely needs a new way to compare the cascading effects of ecosystem loss due to human-induced environmental change to major crises of ...

The asteroid strike that doomed the dinosaurs is an event that many people are aware of. It wiped out more than three-quarters of all life on Earth 66 million years ago. But it was only one of the Big ...