News

  1. Math

    Chicks do arithmetic

    Using the natural inclination of young chickens to cluster in large groups, researchers show that the birds are hatched with a numerical sense.

    By Susan Milius
  2. Life

    Genes help monarchs migrate

    At least 40 genes help monarch butterflies find their way to overwintering sites in Mexico.

    By Tina Hesman Saey
  3. Health & Medicine

    Parasites hinder immunity against cholera

    Harboring intestinal parasites seems to limit a person’s ability to fend off cholera, a new study conducted in Bangladesh shows.

    By Nathan Seppa
  4. Life

    Louse-y genome surprise

    Blood-sucking body lice have an odd arrangement of mitochondrial genes.

    By Laura Sanders
  5. Health & Medicine

    Autism immerses 2-year-olds in a synchronized world

    By age 2, kids with autism focus on synchronized physical events, such as a person’s moving lips accompanied by sounds, rather than on eye movements and other social cues, a new study suggests.