Share the knowledge!
Key Facts In This Video
Life on Earth appeared shortly after the planet cooled and liquid water became available. 00:03
We have less than a billion years to enjoy the surface of Earth before it becomes inhospitable. 00:46
Reserves of water deep underground will protect microbial life for billions of years after life on Earth's surface dies off. 02:22
Wake up with the smartest email in your inbox.
Our best articles a few times a week.