Scientists have zapped mice and rats into a suspended-animation-like state called torpor. The state was induced by beaming ultrasound waves into a precise spot in the rodent's brains. This technique ...

Canadian toddler Erika Nordby astonished doctors in February after she survived lying face down in the snow with her heart stopped for two hours. Nordby's complete recovery baffled her doctors and ...

In early winter, brown bears find a comfy spot in a cave or burrow that’s well-protected from the cold. Then they curl up, fall asleep, and don’t awaken or eat for 5 to 7 months. It’s called ...