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  1. Anthropology

    Some Primates’ Sheltered Lives: Baboons, chimps enter the realm of cave

    In separate studies, researchers have gathered the first systematic evidence showing that baboons and chimpanzees regularly use caves, a behavior many anthropologists have attributed only to people and our direct ancestors.

    By Bruce Bower
  2. Health & Medicine

    Pregnancy Alert: Proteins may predict preeclampsia

    Blood concentrations of two proteins that affect blood vessel growth appear to foretell the pregnancy condition known as preeclampsia.

    By Edna Francisco
  3. 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
  4. 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.