News

  1. Animals

    Killer whales follow postmenopausal leaders

    Taking the lead on salmon hunts may be postmenopausal killer whales’ way of sharing their ecological knowledge.

    By Susan Milius
  2. Health & Medicine

    Hepatitis E vaccine shows strong coverage

    A large trial in China indicates that a vaccine can provide 87 percent protection against the hepatitis E virus, which infects 20 million people a year.

    By Nathan Seppa
  3. Humans

    Ancient jaw may hold clues to origins of human genus

    A 2.8-million-year-old fossil from Ethiopia raises questions about the origins and evolution of the human genus, Homo.

    By Bruce Bower
  4. Neuroscience

    Brain cells predict opponent’s move in game-playing monkeys

    Newly discovered brain cells help monkeys predict whether a companion will cooperate.