Very few people live beyond a century. So, if no one had babies anymore, there would probably be no humans left on Earth within 100 years. But first, the population would shrink as older folks died ...

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

Modern human beings are the ultimate apex species, exerting dominance over our environment in a way that no other animal ever has. However, the other members of our species' lineage weren't nearly as ...