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 ...

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 ...

A new report from researchers at Berkeley, Stanford, and Princeton suggests that humanity has kicked off the sixth extinction level event in our planet's history, even after using extremely ...

Could you run for 100 hours this year? How about just doing a little more than 15 minutes each day? In fact, these goals are essentially equivalent, but one certainly sounds more ambitious than the ...

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 ...

Humans have been shaping their environment since time immemorial. From cities to farms to highways, our impact has grown so large that we've pushed planetary boundaries, fueling concerns about climate ...