The World's Scariest Rollercoaster: A new kind of rollercoaster design takes passengers through a barrel roll like a jet fighter. New Hearts for Newborns: The latest efforts in successful heart transplants for infants. Woodpecker Housing Crunch: Man-made nests replacing what Hurricane Hugo destroyed. Facing Feelings: The connection between how you look and how you feel. Supercool Squirrels: The body temperature of hibernating Alaskan ground squirrels is below the freezing point and yet their blood does not freeze!moreless
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