News

  1. Earth

    Alternative flame retardants leach into the environment

    Supposedly safer chemicals are spotted in peregrine falcon eggs in California.

    By Rachel Ehrenberg
  2. Humans

    Homework makes the grade

    Class performance slipped for physics students who copied.

    By Laura Sanders
  3. Physics

    Bar codes could be next to check out

    New radio frequency tags would use nanotechnology to identify and track products.

    By Lisa Grossman
  4. Health & Medicine

    Existing antibiotic might help keep wraps on AIDS virus

    The acne drug minocycline inhibits HIV activation in infected immune cells, lab tests show.

    By Nathan Seppa
  5. Paleontology

    Tyrannosaurs lived in the Southern Hemisphere, too

    Australian fossils suggest the kin of T.