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  1. Stem cells float in amniotic fluid

    Scientists have discovered a new type of stem cell in the fluid that bathes fetuses in the womb.

    By Christen Brownlee
  2. Health & Medicine

    Putting the kibosh on black cohosh

    The herbal supplement black cohosh is no more effective than a placebo in reducing the number of daily hot flashes in menopausal women.

    By Nathan Seppa
  3. Health & Medicine

    Good news for people with clotting disorder

    Several experimental drugs show promise against the bleeding disorder known as immune thrombocytopenic purpura.

    By Nathan Seppa
  4. Tech

    A backpack with a suspension system

    A new backpack design that uses elastic cords to minimize the pack's vertical motion could lessen bodily strain on wearers and reduce the effort required to carry a load.