News

  1. Paleontology

    Ancient wood points to arctic greenhouse

    Chemical analyses of wood that grew in an ancient arctic forest suggest that the air there once was about twice as humid as it is now.

    By Sid Perkins
  2. Health & Medicine

    Fecal glow could improve meat safety

    Workers who process animal carcasses into meat might soon use a novel type of laser scanner to identify products that have been contaminated with feces.

    By Ben Harder
  3. Astronomy

    Supernovas, gamma-ray bursts: Two of a kind?

    Astronomers have uncovered direct evidence that gamma-ray bursts are linked to supernovas.

    By Ron Cowen
  4. Tech

    A Breath of Fresh Air: Bacteria rid sewage of its stink

    Wastewater-treatment plants can use hydrogen sulfide-degrading bacteria instead of chemicals to reduce odors.