Feature

  1. Night of the Crusher

    Sleep paralysis, a kind of waking nightmare experienced by people in all cultures, sometimes plays a key role in post-traumatic stress disorder and panic attacks and contributes to widespread beliefs in various spirits and supernatural beings.

    By Bruce Bower
  2. Earth

    Volcanic Hot Spots

    Many geophysical studies, including analyses of deep-traveling seismic waves and computer simulations of flowing molten rock deep beneath Earth's crust, are providing evidence that mantle plumes actually exist.

    By Sid Perkins
  3. Astronomy

    Panning Distant Dust

    Astronomers are using hundreds of newly detected debris disks found around a variety of nearby stars to hunt for planets and learn about the evolution of our solar system.