What if freezing wasn't the end of life—but a way to survive?

Some animals have evolved extraordinary adaptations that allow them to endure temperatures that would be fatal to most living creatures. Their metabolism can nearly stop, their hearts can cease beating, and parts of their bodies can actually freeze.

The Animals That Freeze Solid and Wake Up Alive explores the remarkable biology of freeze-tolerant animals and how they survive conditions that seem impossible.

One of the most famous examples is the wood frog.

When winter arrives, the frog can allow ice to form in the spaces between its cells while its body enters a state of extreme metabolic slowdown. Its heart stops. It stops breathing. It can remain in this frozen condition through periods of extreme cold.

The frog's survival depends on specialized adaptati ...