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

Farther back in our planet’s history, volcanic eruptions, rapid climate change, and plummeting oxygen levels have caused at least four additional mass extinctions, with smaller pulses of biodiversity ...

Welcome to what scientists call the Sixth Mass Extinction. Unlike previous mass extinctions caused by asteroids or volcanoes, this one’s on us. Climate change, habitat destruction, pollution, ...

Humans have wiped out hundreds of species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass extinction” event ...

The Apennine brown bear (Ursus arctos marsicanus) is an isolated population found in Central Italy. Previous research ...

CNN — Almost a third of the Earth will need to be protected by 2030 and pollution cut by half to save our remaining wildlife, as we enter the planet's sixth era of mass extinction, according to a ...

It troubles me deeply to hear about the massive wave of extinctions that scientists predict are coming if we don’t address the current human assault on our natural environment. I am wondering what we ...

There have been five unquestionably great extinctions on earth: the end-Ordovician, the late-Devonian, the end-Permian, end-Triassic, and the end-Cretaceous extinctions. Some think we are now in a ...

The sixth extinction -- The mastodon's molars -- The original penguin -- The luck of the ammonites -- Welcome to the Anthropocene -- The sea around us -- Dropping acid -- The forest and the trees -- ...

We're in the midst of the Earth’s sixth mass extinction crisis. Harvard biologist E. O. Wilson estimated that 30,000 species per year (or three species per hour) are being driven to extinction.