News

  1. Health & Medicine

    Early Warning? Spinal fluid may signal Alzheimer’s presence

    Spinal-fluid concentrations of two compounds already linked to the disease may reveal whether a person has Alzheimer's disease.

    By Nathan Seppa
  2. Paleontology

    Ratzilla: Extinct rodent was big, really big

    Scientists who've analyzed the fossilized remains of an extinct South American rodent say that the creatures grew to weigh a whopping 700 kilograms.

    By Sid Perkins
  3. Tech

    Channeling light in the deep sea

    Light-conducting fibers that naturally sprout from certain deep-sea sponges may hold lessons for makers of optical fibers for telecommunications.

    By Peter Weiss
  4. Animals

    Risk of egg diseases may rush incubation

    Bird eggs can catch infections through their shells, and that risk may be an overlooked factor in the puzzlingly early start of incubation.