News

  1. Health & Medicine

    Fullness Factor: Gut hormone tells brain the stomach is well fed

    A hormone produced by the intestines could be the primary satiety signal sent to the brain.

    By John Travis
  2. Astronomy

    Visible Matter: Once lost but now found

    New observations confirm that most of the visible matter in the universe lies hidden in vast, hard-to-detect gas clouds between galaxies.

    By Ron Cowen
  3. Plants

    Recent tree scourge poses garden threat

    Lab tests suggest that a lethal disease of oak trees in California and Oregon could strike some popular garden shrubs in the rhododendron family.

    By Susan Milius
  4. Plants

    Disease outpacing control in largest chestnut patch left

    An unusual test of a biological control for the blight that's killing American chestnuts doesn't look good in the largest remaining patch.

    By Susan Milius

  5. Speech loses beat in dyslexia

    The severe reading disorder known as dyslexia may involve an inability to perceive a critical rhythmic beat that separates parts of spoken words.

    By Bruce Bower
  6. Health & Medicine

    Ulcer bug linked to stroke

    Potent strains of an ulcer-causing bacterium may also trigger strokes.

    By Damaris Christensen
  7. Health & Medicine

    Lab tool may spawn new antiviral drugs

    Short strands of RNA can be used to stop viruses such as HIV.

    By John Travis
  8. Health & Medicine

    Breast-feeding has protective bonus

    Breast-feeding appears to help ward off breast cancer.

    By Damaris Christensen
  9. Materials Science

    New gel could lead to cartilage repair

    A new scaffold material that contains cartilage cells and encourages their growth could help scientists create living tissue replacements suitable for treating osteoarthritis and sports injuries.

    By Jessica Gorman
  10. Animals

    Hyena androgens exact high cost

    Blocking androgens for spotted hyenas before they're born shows that the exposure of a female fetus to male hormones normally takes a heavy physical toll when females bear their own pups.

    By Susan Milius
  11. Animals

    Deer littermates have different dads

    Twin fawns may not have the same dad—the first time multiple paternity has turned up in a large, free-ranging hoofed mammal.

    By Susan Milius

  12. Barks are more than just “Hey, you!”

    Computer analysis of thousands of dog barks suggests that our best friends may be signaling more than just a generalized "Hey you!"

    By Susan Milius