[0:00]There's a creature on Earth that could survive the end of the world, and it's smaller than a grain of sand.
[0:05]It doesn't breathe, eat, or sleep, yet it never dies.
[0:09]This is the tardigrade, also called the water bear.
[0:12]It can survive the vacuum of space, boiling heat, freezing cold, and radiation stronger than anything on Earth.
[0:18]When things get too harsh, it simply shuts down, curling into a tiny shell, waiting for years, even decades.
[0:24]Then one drop of water and it comes back to life.
[0:27]No heartbeat, no lungs, just motion. It's not truly immortal, but it's outlived every extinction in Earth's history.
