Uncategorized

  1. Humans

    Pieces of Homo naledi story continue to puzzle

    Researchers defend Homo naledi as a new hominid species and debate how it reached an underground cave.

    By Bruce Bower
  2. Cosmology

    New sky map charts previously unknown gamma-ray sources

    A new map of the sky from the High-Altitude Water Cherenkov Observatory charts the cosmic origins of high-energy photons.

    By Emily Conover
  3. Planetary Science

    How alien can a planet be and still support life?

    Geoscientists imagine the unearthly mechanisms that could keep alien planets habitable.

    By Thomas Sumner
  4. Astronomy

    New telescopes will search for signs of life on distant planets

    Researchers are coming up with creative ways to pick up biosignatures in far-away planetary atmospheres.