Uncategorized

  1. Earth

    Mapping the Frozen Sky: Study looks at clouds from both sides now

    By combining simultaneous observations from satellites and ground-based instruments, scientists can generate a three-dimensional map of the size and distribution of ice particles in a cirrus cloud.

    By Sid Perkins
  2. Animals

    Male bats primp daily for odor display

    For the first time, scientists have described the daily routine of male sac-winged bats gathering to freshen the odor pouches on their wings.

    By Susan Milius
  3. Health & Medicine

    Stem cells repair rat spinal cord damage

    Using embryonic stem cells from mice, researchers restored some movement in paralyzed rats that had undergone a crippling spinal injury.

    By Nathan Seppa
  4. Physics

    Time’s arrow may make U-turns in universe

    Time may run backwards for isolated chunks of matter in our universe and that reversed state could be probed gently from the forward-going realm without disturbing the time arrow.