Add Yahoo as a preferred source to see more of our stories on Google. A wildfire frontline with emergency services nearby, Okanagan Valley, British Columbia, Canada. Farther back in our planet’s ...

For eons, Earth has experienced dramatic shifts, punctuated by five catastrophic mass extinction events that wiped out vast swathes of life. Now, a growing chorus of scientists is sounding the alarm: ...

Add Yahoo as a preferred source to see more of our stories on Google. A skeleton of a Dodo. - Kirsty Wigglesworth/AP Humans have wiped out hundreds of species — with many more on the brink or ...

Waves of extinction have ripped through life on Earth over and over again during its long history. The non-avian dinosaurs ...

The Earth has lived through 5 mass extinctions of animals and plants. The last one - 66 million years ago - took out the dinosaurs. That extinction is believed to have been caused by a giant asteroid ...

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 ...