News

  1. Health & Medicine

    Questions remain about the benefits of taking testosterone

    For men with low testosterone, the pros and cons of taking hormone replacement therapy are mixed.

    By Meghan Rosen
  2. Astronomy

    Seven Earth-sized planets orbit nearby supercool star

    A planetary system called TRAPPIST-1 has seven Earth-sized planets, three in the habitable zone, researchers report.

    By Ashley Yeager
  3. Anthropology

    Power may have passed via women in ancient Chaco Canyon society

    DNA points to a 330-year-long reign of a maternal dynasty centered in New Mexico’s Chaco Canyon.

    By Bruce Bower
  4. Anthropology

    Low-status chimps revealed as trendsetters

    Outranked chimpanzees trigger spread of useful new behaviors among their comrades.