News

  1. Health & Medicine

    Deadly Stowaways: Seeds of cancer in transplant recipients are traced back to donors

    Precancerous cells that grow into Kaposi's sarcoma are sometimes introduced into a person in an organ transplant.

    By Nathan Seppa
  2. Anthropology

    Cannibalism’s DNA Trail: Gene may signal ancient prion-disease outbreaks

    Cannibalism among prehistoric humans may have left lasting genetic marks.

    By Bruce Bower
  3. Ecosystems

    At a Snail’s Place: Rock climbing cuts mollusk diversity

    As rock climbing soars in popularity, some cliff-side snail populations may be crashing.

    By Kendall Morgan
  4. Animals

    Costly Sexiness: All that flash puts birds at extra risk

    Distinctive his-and-her plumages increase the chance that a bird species will go extinct locally, according to an unusually far-ranging study.