News

  1. Earth

    Buried Saharan rivers might have been early expressways

    Humans might have migrated across the arid region along three once-lush waterways.

    By Erin Wayman
  2. Physics

    Notorious ‘Big G’ gets a little larger

    Gravitational constant is difficult to measure, but physicists calculate with new number.

    By Meghan Rosen
  3. Animals

    Young insect legs have real meshing gears

    Tiny teeth on hiplike structures keep legs in sync, allowing juvenile planthoppers to jump.

    By Susan Milius
  4. Astronomy

    At last, Voyager 1 slips into interstellar space

    Solar blast data provides definitive evidence that Voyager 1 has cruised beyond the heliosphere and into interstellar space.

    By Andrew Grant
  5. Health & Medicine

    Vaccine stops deadly sand-fly-spread scourge in animal test

    A DNA vaccine triggers protection against the sand-fly-borne scourge Leishmania.