In the early 1990s, eight people agreed to vanish from the world and live for two years inside a sealed glass habitat in the Arizona desert, a kind of fake Earth built to see whether humans could ...

A small, resourceful species emerged in Africa and spread across the planet, adapting to every environment it encountered. This video follows that expansion, and how human success has reshaped ...

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 ...

If someone tried to put a price tag on Earth, what would that number even be based on? Land, oceans, ecosystems, raw ...

This academic has theorized about what would happen if humans became extinct and reveals who our successor would be.