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  1. Lessons from the Torpid

    Hibernators have some helpful tips for keeping humans healthy

    By Tina Hesman Saey
  2. Earth

    Making Waves

    Japanese quake gave scientists an unprecedented look at a big tsunami.

    By Alexandra Witze

  3. Consciousness Emerges

    Somewhere along a tangled path, sights, sounds and insights pop into awareness.

    By Laura Sanders
  4. Life

    Shark’s skin adds forward boost

    Fish gets extra thrust by the teeth of its skin.

    By Rebecca Cheung
  5. Life

    Cancer drug may have Alzheimer’s benefits

    Medication helps the brain clear a plaque-forming protein associated with dementia.

    By Laura Sanders
  6. Health & Medicine

    Tai chi helps Parkinson’s patients balance

    The controlled movement of the Chinese martial art can improve patients' coordination and limit falls, a study finds.