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

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 ...

In a distant future, Earth may no longer be under the dominion of humanity. Picture a planet devoid of bustling cities and human infrastructure, with nature slowly regaining control. The question then ...