News

  1. Paleontology

    Early Flight? Winged insects appear surprisingly ancient

    New analyses of a fossil suggest that winged insects may have emerged as early as 400 million years ago.

    By Sid Perkins
  2. Tech

    Snappy DNA: Long strand folds into octahedron

    By harnessing the self-assembling properties of DNA, researchers coerced a single strand of the genetic material to assume the shape of an octahedron.

    By Alexandra Goho

  3. Tailoring Therapies: Cloned human embryo provides stem cells

    Scientists have for the first time carried test-tube cloning of a human embryo to the stage at which it can yield stem cells.

    By John Travis
  4. Anthropology

    European find gets Stone Age date

    A new radiocarbon analysis indicates that a skeleton found more than a century ago in an Italian cave dates to around 26,400 to 23,200 years ago.