The next time you snivel, "I am freezing to death," you might want to consider the wood frog, which withstands such bone-chilling cold in winter that its heart stops beating yet does not die.

With this delightfully warm weather, the earth is coming alive. Buds are swelling, maples are flowering, and the birds have ...

The wood frog survives extreme winter temperatures by freezing solid, with its heart stopping for nearly eight months. It uses its natural antifreeze, a mix of glucose and urine constituents ...