News

  1. Chemistry

    Nonstick chemical pollutes water at notable levels

    Residues of nonstick chemicals — from unknown sources — appear to be approaching concentrations associated with adverse effects in laboratory animals.

    By Janet Raloff
  2. Health & Medicine

    Toothpicks match needles for acupuncture

    Sham acupuncture works as well as the real thing for back pain, a study shows.

    By Nathan Seppa
  3. Humans

    Intel International Science and Engineering Fair kicks off

    Young scientists descend on Reno in hopes of winning scholarships and other prizes.

    By Rachel Ehrenberg
  4. Space

    Final Hubble repair mission begins

    The final mission to repair and upgrade the Hubble Space Telescope lifted off May 11.