News

  1. Health & Medicine

    Same neurons at work in sleep and under anesthesia

    Drugs boost activity in nerve cells that usually induce a slumber.

    By Laura Sanders
  2. Astronomy

    Violent birth proposed for Saturn’s moon mishmash

    A simulation suggests that giant collisions created Titan and the planet’s many smaller satellites.

    By Nadia Drake
  3. Humans

    Shoulder fossil may put Lucy’s kind up a tree

    Fossils of an ancient child suggest the more than 3-million-year-old hominid mixed climbing with walking.

    By Bruce Bower
  4. Health & Medicine

    Aspirin has selective benefit in colorectal cancer

    Patients with a common gene mutation survive longer, which might enable doctors to predict who would get results from the drug.