Some animals can survive conditions that would kill most living creatures.

Their bodies can freeze.

Their heartbeats can stop.

Their breathing can cease.

And after the environment warms again, they can come back to life.

The Animals That Freeze Solid and Wake Up Alive explores the remarkable biology of animals that have evolved ways to survive extreme freezing.

One of the most famous examples is the wood frog.

When winter arrives, much of the frog's body can freeze. Ice forms outside its cells while its metabolism slows dramatically.

The frog protects its tissues using natural cryoprotectants, including glucose, which helps reduce the damage caused by freezing.

Its heart stops.

Its breathing stops.

And the frog can remain in this frozen state until temperatures rise again.

Wh ...