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  1. Mammalian ear cells can regenerate

    The cells responsible for hearing in mammals may be capable of regeneration, just as those of birds and other vertebrates are.

    By Christen Brownlee
  2. Tech

    Humanlike touch from chemical film

    A nanoparticle-laden, pressure-detecting membrane feels textures with about the same sensitivity as human skin.

    By Peter Weiss
  3. Humans

    With permission to nap, doctors stay more alert

    Allowing doctors-in-training who are on call to hand off to another doctor the pager that summons them to the next patient increases the amount of sleep they get and reduces their fatigue.

    By Ben Harder
  4. Health & Medicine

    Pregnancy risk from blood pressure drugs?

    Babies exposed in the first trimester of their mother's pregnancy to blood pressure drugs called ACE inhibitors are at an increased risk of birth defects.