Life on Earth is tough as nails.
From the crushing, soulless depths of the ocean to the highest reaches of the atmosphere, from boiling hot springs to Antarctic wastes — even in the radioactive heart of Chernobyl, life thrives. It finds a way. It laughs in the face of adversity.
Turns out, that amazing tenacity is kind of our birthright as Earthlings. To understand why, you've got to go back to Snowball Earth.
Saturn's moon Enceladus. 720 million years ago, Earth's surface might have looked strikingly similar. Photo from NASA/JPL-Caltech/Space Science Institute.