News

  1. Climate

    Weather patterns over Southern Hemisphere have a regular pulse

    Variations in energy and rainfall over the Southern Hemisphere follow a pattern that repeats every 20 to 30 days.

    By Gabriel Popkin
  2. Genetics

    When flowers died out in Arctic, so did mammoths

    Genetic analysis finds vegetation change in the Arctic around same time as megafauna extinction.

    By Tina Hesman Saey
  3. Astronomy

    Old stars gleaned neighbors’ gas, Hubble data show

    Blue straggler stars can continue to burn hot after taking material from a stellar companion.

    By Ashley Yeager
  4. Materials Science

    Scientists throw crystals a curve

    Particles inside a sphere assemble into ordered ribbons, not lumps.