Earth will become too hot to handle in a billion years. There's a (very) remote chance a passing star could save us by knocking our planet back into the habitable zone. When you purchase through links ...

I was a teenaged environmentalist. And because, at the age of 17, I took part in the very first Earth Day on April 22, 1970, I grew up with a lifelong respect for this tiny, lovely blue-green marble ...

Posts from this topic will be added to your daily email digest and your homepage feed. Researchers conclude that the Double Asteroid Redirection Test (DART) mission proves humans can defend Earth from ...