Uncategorized

  1. Life

    How Tiktaalik got its neck

    The oldest fossil with a neck, Tiktaalik roseae, shows how animals developed a head for living on land.

    By Susan Milius
  2. Health & Medicine

    Streamlined polio vaccine fights outbreaks

    Back to basics: A simplified polio vaccine works better than the standard approach and overcomes an unforeseen shortcoming in the widely used oral vaccine.

    By Nathan Seppa
  3. Humans

    Bypassing paralyzed nerves

    Implanted electrode helps paralyzed monkey clench its forearm muscles.

    By Patrick Barry
  4. Humans

    Infectious finds at ancient site

    A DNA analysis of skeletons found at a submerged Israeli site produces the earliest known evidence of human tuberculosis, now known to have existed at a 9,000-year-old farming settlement.