News

  1. Animals

    When and why did masturbation evolve in primates? A new study provides clues

    In a first-of-its-kind comparative study, researchers show that primates were masturbating 40 million years ago and that the behavior may help males keep their sperm fresh.

    By Darren Incorvaia
  2. Life

    A gene therapy shot might keep cats from getting pregnant without being spayed

    Even after mating with fertile males, females given the cat contraceptive, which targets an ovulation-preventing hormone, did not get pregnant.

    By Erin Garcia de Jesús
  3. Anthropology

    Homo naledi may have dug cave graves and carved marks into cave walls

    Proposed discoveries of humanlike activities by these ancient, small-brained hominids have elicited skepticism from some researchers.