News

  1. Humans

    Maya civilization’s roots may lie in ritual

    Cultural exchanges in southern Mexico and Guatemala tied to ancient society's rise.

    By Bruce Bower
  2. Humans

    Web searches for money words anticipate market moves

    Dow drops follow weeks when more people search Google for ‘debt’ or ‘stocks.’

    By Rachel Ehrenberg
  3. Earth

    Early Earth’s chlorine blown away by giant impacts

    Low levels of chlorine on planet's surface have long puzzled scientists.

    By Erin Wayman
  4. Life

    Mutation makes H5N1 flu lose its grip

    Laboratory-added genetic change makes avian influenza unable to bind to bird cells.

    By Tina Hesman Saey
  5. Life

    Why corals do calisthenics

    Pulsating motion appears to flush water to improve photosynthetic efficiency in symbiotic algae.