News

  1. Climate

    Methane releases in arctic seas could wreak devastation

    Warming climate could lead to dead zones, acidification and shifts at the base of the ocean’s food chain.

    By Sid Perkins
  2. Tech

    What Jefferson was thinking

    Imaging technology reveals a last-minute revision to the Declaration of Independence.

    By Janet Raloff
  3. Humans

    Botox injections put a crease in emotional evaluations

    By immobilizing a muscle needed for frowning, Botox injections may interfere with a person’s ability to assess others’ emotions.

    By Bruce Bower
  4. Life

    Saber-toothed cats strong-armed prey

    Smilodon fatalis used strong forelimbs to pin victims, an analysis of fossils shows.

    By Gwyneth Dickey
  5. Life

    Evolutionary adaptation breeds gender-identification confusion

    The rise of camouflage among some lizards in White Sands National Monument has generated a communication breakdown.