News

  1. Life

    Antianxiety drugs affect fish, too

    Perch swim more and eat faster when exposed to concentrations of an antianxiety medication found in rivers.

    By Erin Wayman
  2. Humans

    Newborn babies walk the walk

    Infants strut a runway wearing electrodes to show how the walking reflex works.

    By Laura Sanders
  3. Animals

    Sea slug carries disposable penis, plus spares

    A hermaphroditic gastropod sheds its penis after one use, then uncoils another.

    By Susan Milius
  4. Health & Medicine

    To develop male behavior, rats need immune cells

    Research reveals unexpected role for cells called microglia in shaping the brain.

    By Laura Sanders
  5. Health & Medicine

    Compound linked to IVF success

    Women with high blood concentrations of anti-Müllerian hormone were more likely to conceive and give birth after in vitro fertilization.