News

  1. Humans

    Arsenic-based life finding fails follow-up

    Tests see no evidence to confirm a bold 2010 claim that some microbes can incorporate the normally toxic element into their cellular machinery.

    By Rachel Ehrenberg
  2. Space

    Spacecraft captures dust from interstellar wind

    Measurements of the particles reveal clues about the composition of space beyond the solar system.

    By Nadia Drake
  3. Health & Medicine

    Bird flu leaves tracks in brain

    H5N1 infection might make survivors vulnerable to Parkinson’s or other neurological disorders, a study in mice indicates.

    By Laura Sanders
  4. Life

    No sleep, no problem, but keep the grub coming

    A naturally occurring strain of fruit fly can thrive without slumber, but succumbs more quickly to starvation.