Uncategorized

  1. Astronomy

    Twin history

    The Milky Way and its nearest large galactic neighbor, Andromeda, are more alike than earlier evidence had indicated.

    By Ron Cowen
  2. Health & Medicine

    Experimental drug targets Alzheimer’s

    A novel drug reverses some Alzheimer's-type symptoms in mice.

    By Nathan Seppa
  3. Humans

    Two-fifths of Amazonian forest is at risk

    The Amazon basin's forest may lose 2.1 million square kilometers by 2050 if current development trends go unabated.

    By Ben Harder
  4. Anthropology

    Chimps scratch out grooming requests

    Pairs of adult males in a community of wild African chimps often communicate with gestures.

    By Bruce Bower
  5. Animals

    Sharpshooter threatens Tahiti by inedibility

    A North American insect is menacing Tahitian ecosystems by getting itself killed and proving surprisingly toxic to its predators.