News

  1. Space

    Tuned in to new noise from the cosmos

    Unexplained radio noise may be signals from the early universe.

    By Ron Cowen
  2. Life

    Fifty-two things to do with a bat wing

    Bats swim, run, flirt and do lots of other nonflight jobs with their wings -- a fact that may have influenced evolution of the wing's architecture.

    By Susan Milius
  3. Health & Medicine

    Record low for human blood oxygen levels

    Study of Mt. Everest climbers shows some bodies can tolerate low oxygen levels that are toxic to others.

    By Rachel Ehrenberg
  4. Health & Medicine

    Early C-sections pose risks

    Babies delivered by elective cesarean section just a week or two before 39 weeks of gestation face increased risk of respiratory and other complications.