The Wood Frog's Incredible Survival Trick

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This frog can freeze solid during winter… and come back to life when spring arrives. Its heart stops. It stops breathing. Even its eyes can freeze. For most animals, freezing like this would be fatal. Ice can damage cells and pull water out of them. So how does it survive? The wood frog has an extraordinary trick. As temperatures fall, its liver floods the body with glucose—a type of sugar that helps protect its cells from freezing damage. Ice can form around its cells and organs, while the cells themselves are protected from the worst damage. Then spring arrives. The frog thaws… its heart starts beating again… its brain activates… and its legs begin moving. It isn't science fiction. It's the wood frog—and scientists are still studying how its body pulls off this incredible survival trick. Real science. Unreal results.