News

  1. Archaeology

    Maize domestication grows older in Mexico

    Maize cultivation existed in southern Mexico at least 6,300 years ago, according to a recent radiocarbon analysis of two maize cobs unearthed in a cave nearly 40 years ago.

    By Bruce Bower
  2. Health & Medicine

    Common additive thwarts malaria parasite

    Triclosan--a drug used as an antimicrobial agent in toothpaste, deodorant, and other products--kills rodent malaria parasites in mice and human malaria parasites in test-tube studies.

    By Nathan Seppa
  3. Physics

    Muon orbits may defy main physics theory

    A tiny discrepancy from theory in a newly remeasured magnetic trait of a subatomic particle, the muon, may represent a first crack in the 30-year-old prevailing standard model of particle physics.