August 24, 2002 | Science News

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  • News

    Tracking signs of memory loss

    A new imaging agent may allow researchers to detect the plaques characteristic of Alzheimer's disease before symptoms are present, when therapies may be most effective.
  • Feature

    Sea Dragons

    About 235 million years ago, as the earliest dinosaurs stomped about on land, some of their reptilian relatives slipped back into the surf, took on an aquatic lifestyle, and became ichthyosaurs—Greek for fish lizards.
  • Feature

    Cooking Up a Carcinogen

    The discovery that acrylamide—a known animal carcinogen—forms in many foods as they fry or bake has prompted the development of an international research network to investigate whether it poses a threat.