News

  1. Humans

    Bigger numbers, not better brains, smarten human cultures

    An experiment using a computer game supports the idea that big populations drove the evolution of complex human cultures.

    By Bruce Bower
  2. Oceans

    Extremely salty water is at least 100 million years old

    Supersaline sediments off East Coast shed light on Atlantic Ocean’s early history.

    By Jessica Morrison
  3. Neuroscience

    Bacteria may transfer mom’s stress to fetus

    Expecting mice under psychological pressure passed different mix of microbes to their pups, affecting the babies’ brains.

    By Laura Sanders
  4. Animals

    Sea slug mating features a stab in the head

    Newly discovered hermaphroditic sea slug deploys specialized needle-thin organ for injections near the eyes.