News

  1. Genetics

    Genes for body symmetry may also control handedness

    Lefties and righties can thank same genes that put hearts on left side for hand dominance, study of thousands of people’s DNA suggests.

    By Tina Hesman Saey
  2. Psychology

    Bad acts spark a ‘cheater’s high’

    Committing low-stakes acts of dishonesty enhances perpetrators’ moods.

    By Bruce Bower
  3. 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
  4. Physics

    Notorious ‘Big G’ gets a little larger

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

    By Meghan Rosen
  5. Animals

    Young insect legs have real meshing gears

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