At some point in the deep past, humans may have come frighteningly close to disappearing altogether. Here’s what we know, ...

Humans will likely go extinct eventually, leaving behind a planet that will have to adjust in their wake. While there is no true consensus as to what a human-free world will look like, there are a ...

Yes, we might think we’re invincible and capable of doing everything on our own, like John Wayne or James Bond; that is, until we suffer a serious injury or illness, or reach old age. That’s when we ...