Uncategorized

  1. Earth

    A massive crater hides beneath Greenland’s ice

    The discovery of a vast crater in Greenland suggests that a 1-kilometer-wide asteroid hit the Earth between 2.6 million and 11,700 years ago.

    By Carolyn Gramling
  2. Anthropology

    Skull damage suggests Neandertals led no more violent lives than humans

    Neandertals’ skulls suggest they didn’t lead especially injury-prone lives.

    By Bruce Bower
  3. Animals

    Sound-absorbent wings and fur help some moths evade bats

    Tiny ultrathin scales on some moth wings absorb sound waves sent out by bats on the hunt.

    By Jennifer Leman
  4. Health & Medicine

    U.S. cases of a polio-like illness rise, but there are few clues to its cause

    A total of 90 cases of acute flaccid myelitis have been confirmed so far this year, out of 252 under investigation.