Uncategorized

  1. Humans

    Bear deadline

    Court calls for the already overdue decision on listing polar bears as a threatened species.

    By Susan Milius
  2. Earth

    Molten salts give biofuels a boost

    Making biofuels from the chemical energy locked in plant cell walls has proven difficult, but molten salts may help.

    By Patrick Barry
  3. Astronomy

    Massive minis

    Astronomers have discovered a puzzling group of galaxies in the early universe that are as tiny as babies but as massive as full-grown adults.

    By Ron Cowen
  4. Planetary Science

    Hop, skip and a jump

    Less gravity on Mars means wind-driven grains of sand travel up to 10 times faster than those blowing along Earth’s surface, new analyses suggest.