Vol. 161 No. #20
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More Stories from the May 18, 2002 issue

  1. Earth

    Honey may pose hidden toxic risk

    Many honeys may contain potentially toxic traces of potent liver-damaging compounds produced naturally by a broad range of flowering plants.

  2. Health & Medicine

    Spice component versus cancer cells

    Curcumin, a compound in the spice turmeric, teams up with an immune-system protein to kill prostate cancer cells in a new laboratory study.

  3. In depression, the placebo also rises

    In a small group of depressed patients, those whose condition improved after taking placebo pills for 6 weeks displayed many of the same brain changes observed in people who benefited from an antidepressant drug.

  4. Health & Medicine

    Beating two infections with one vaccine

    Identifying key similarities between related viruses could enable researchers to coax some vaccines to do double duty.

  5. Health & Medicine

    Liquid could aid vaccine storage and use

    A new medium for vaccines could remove the need to either refrigerate or rehydrate vaccines, hurdles that impede immunization campaigns in poor countries.

  6. Baby Facial: Infants monkey with face recognition

    Between ages 6 months and 9 months, babies apparently lose the ability to discriminate between the faces of individuals in different animal species and start to develop an expertise in discerning human faces.

  7. Health & Medicine

    Amyloid Buster? New drug hinders Alzheimer’s protein

    By disabling a dementia-linked protein, a synthetic drug is showing a tantalizing capacity to interfere with the formation of waxy amyloid deposits like those that accumulate in the brains of people with Alzheimer's disease.

  8. Earth

    Shelter from Space Storms: Energy rebounds from Earth

    NASA satellite observations show that Earth's outer atmosphere interacts dramatically with the solar wind and shields the planet from it.

  9. Health & Medicine

    Wholesome Grains: Insulin effects may explain healthful diet

    Overweight people who eat whole grains rather than refined ones appear better equipped to manage their blood-sugar concentrations with minimal production of the hormone insulin, which could help explain why a diet rich in whole grains appears to guard against type II diabetes and heart disease.

  10. Tech

    Live Tour: Joystick journeys reveal tumor interiors

    A new holographic technique may someday enable doctors to skip certain biopsies and choose instead to take video excursions inside suspicious growths in skin or internal body linings.

  11. Health & Medicine

    D-fending the Colon: Bile component triggers vitamin D receptor

    The protein that enables cells to respond to vitamin D also helps the gastrointestinal tract protect itself from an especially dangerous acid in bile.

  12. Planetary Science

    Hard bodies pair off

    About one out of every eight asteroids traveling near Earth has a rocky companion.

  13. Anthrax genomes compared for terrorism clues

    Investigators seeking clues to last fall's anthrax attack have analyzed the genome of the anthrax bacterium.

  14. Animals

    Gator Feelings: Tough faces, more sensitive than ours

    Alligator and crocodile faces carry pressure receptors so responsive that they can detect ripples on the water's surface from a single falling drop.

  15. Health & Medicine

    A Model Mouse

    Mice with symptoms similar to rheumatoid arthritis may illuminate the puzzling disorder.

  16. Archaeology

    Openings to the Underworld

    Archaeological finds indicate that ancient groups in Mexico and Central America, including the Maya, held beliefs about a sacred landscape that focused on natural and human-made caves as sites of important ritual activities and burials.