Uncategorized

  1. Earth

    Ancient Heights: Leaf fossils track elevation changes

    A new technique using altitude-dependent differences in fossil leaves may make it possible to chronicle the rise and fall of mountain ranges over millions of years.

    By David Shiga
  2. Tech

    Magnetic Bit Boost: Quantum rewiring for computer memories

    A quantum-mechanical memory component that might replace electronic computer memories has come closer to practicality.

    By Peter Weiss
  3. Ecosystems

    The Birds Are Falling: Avian losses could hit ecosystems hard

    If many bird populations dip toward extinction in the coming century, widespread harm could come to ecosystems that depend on these birds.

    By Ben Harder
  4. Health & Medicine

    Birth Dilemma: Doctors weigh pros and cons of cesareans

    Women attempting a vaginal birth after a cesarean delivery have more uterine ruptures and other complications than do women undergoing a second cesarean section.