So, say you have a city-killer coming towards Earth, if we have less than 10 years, for example, or the asteroid is way bigger than that, and we do have more time, you can't just slam a spacecraft ...

Earth's Worst Mass Extinction Is Actually a Warning. ... Imagine mountain line climbing up and down in that. - They're meant for it, though. - [Dustin] Yeah. - I don't know if we are.

Earth's biodiversity is in crisis. An imminent "sixth mass extinction" threatens beloved and important wildlife. It also ...

At least five times, a biological catastrophe has engulfed Earth killing off the vast majority of species. As scientists say we’re in a sixth mass extinction, what can we learn from the past?

A study of fossils from the Permian-Triassic extinction event 252 million years ago shows that forests in many parts of the ...

Earth’s largest mass extinction, often referred to as the “Great Dying,” occurred about 252 million years ago. Massive volcanic eruptions triggered catastrophic climate changes that altered ...

Supernovas are known to be capable of sterilizing a planet if they go off within about 25 light-years. Earth may have had a brush with one or more such events about 360 million years ago.

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Acknowledging that no perfect version of Earth exists—that extinction is as normal as any other evolutionary process, that the evolutionary-selection pressures humans are putting on the planet ...

The collapse of tropical forests during Earth's most catastrophic extinction event was the primary cause of the prolonged global warming which followed, according to new research. The Permian ...

If you thought the mass extinction caused by the Chicxulub asteroid impact 65 million years ago was bad, think again. Travel back in time even further to around 250 million years ago, and the ...

Robin George Andrews, author of "How to Kill an Asteroid," joins The Excerpt to discuss how scientists are working to literally save the planet.