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 ...

Scientists have documented five major mass extinction events in Earth's history, during which at least three-quarters of life went extinct. But with humans clearing habitats, exterminating species and ...

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 ...

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 water ...

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 Earth has suffered five mass extinctions. Human activities are now accelerating climate change and the threat of the "Sixth Mass Extinction". We analyze the past to consider what we should do.

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 ...

When plant and animal species go extinct, it's usually a clear sign that humans have messed up. We've over-hunted, destroyed habitats, polluted waterways, and altered the climate by burning fossil ...

In case you haven't heard, there have been five "mass extinctions" in the history of our planet. The first mass extinction was about 450 million years ago. That's right, 450 million. (Our planet is ...

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 ...