Extreme Environments Facts

More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.

The Dallol springs in Ethiopia glow neon yellow and acid green - and their pH drops below zero, lower than battery acid. In 2019, scientists found no life in the harshest pools despite the liquid water. Liquid water alone is not enough for life.