News

  1. Astronomy

    Ray Tracing: Energetic cosmic rays linked to giant black holes

    New observations suggest that ultrahigh-energy cosmic rays originate in the cores of nearby galaxies harboring supermassive black holes.

    By Ron Cowen

  2. Smarty Gene: Breast-fed kids show DNA-aided IQ boost

    Breast-feeding substantially boosts children's intelligence, but only if the youngsters possess a specific version of a gene involved in processing mothers' milk.

    By Bruce Bower

  3. Doing the DNA shuffle

    DNA near the ends of people's chromosomes shows surprisingly large differences from the corresponding DNA in other great apes.

    By Patrick Barry
  4. Health & Medicine

    Nongene DNA boosts AIDS risk

    People with a newly discovered genetic variation are more vulnerable to HIV infection.