News

  1. 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
  2. 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
  3. Neuroscience

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

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

    By Tina Hesman Saey
  4. Plants

    Tropical plant knows whose bill is in its flowers

    A rainforest plant avoids inbreeding by accepting pollen only from hummingbird species that must travel to reach it.