News

  1. Chemistry

    Old books can have unsafe levels of chromium, but readers’ risk is low

    An analysis of a university collection found that the vibrant pigments coating some Victorian-era tomes exceed exposure limits for the heavy metal.

    By Skyler Ware
  2. Paleontology

    This spiky fossil shows what early mollusks looked like

    The fossil, plus 17 others from more than 500 million years ago, reveal that early mollusks were slug-like creatures with prickly armor.

    By Erin Garcia de Jesús
  3. Astronomy

    A distant quasar may be zapping all galaxies around itself

    Star formation has ceased within at least 16 million light-years of the quasar. A similar phenomenon may have fried the Milky Way when it was young.