News

  1. Paleontology

    Genes Seem to Link Unlikely Relatives

    Genetic markers on three proteins suggest a common African ancestor for elephants, aardvarks, elephant shrews, golden moles, and other animals.

    By Sid Perkins
  2. Planetary Science

    Ganymede May Have Vast Hidden Ocean

    A combination of images, spectra, and magnetic field measurements suggests that in addition to Jupiter's moon Europa, another Jovian moon, Ganymede, may also have had—and might still harbor—an ocean.

    By Ron Cowen
  3. Earth

    Salmon puzzle: Why did males turn female?

    Most of the spawning female Chinook salmon in one part of the Columbia River appear to have started life as males.

    By Janet Raloff
  4. Health & Medicine

    Drugs counteract irritable bowel syndrome

    Antibiotics can knock out bacteria overload in the small intestine, temporarily reversing irritable bowel syndrome.