Vol. 162 No. #23
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More Stories from the December 7, 2002 issue

  1. Health & Medicine

    Protein may signal heart problems

    A protein already linked to inflammation is also a strong predictor of heart problems.

  2. Planetary Science

    Seeing Saturn

    After 5 years of interplanetary travel, the Saturn-bound Cassini spacecraft has taken its first picture of the ringed planet.

  3. Health & Medicine

    A hot new therapy?

    Spending time in a sauna improves heart function in people with chronic heart failure.

  4. Health & Medicine

    Cycling and surgery have similar effect

    Among people with chest pain because of clogged heart arteries, regular exercise on a stationary bike reduced symptoms better than surgery did.

  5. Tech

    Robotic heart surgery

    By using robotic rather than conventional open-heart techniques, doctors can perform heart surgery with smaller incisions, giving patients less pain and speeding recovery.

  6. Health & Medicine

    Keeping the beat

    Muscle cells taken from embryonic rats and put into an adult rat's heart can transmit the electric signals that govern the heartbeat.

  7. Anthropology

    Script Delivery: New World writing takes disputed turn

    Researchers announced, to considerable controversy, that inscriptions found on artifacts at an Olmec site in southeastern Mexico represented the earliest known writing system in the Americas.

  8. Health & Medicine

    Jarring Result: Extreme biking can hurt men’s fertility

    Men who maintain grueling mountain-bicycling programs are apt to have lower sperm counts than nonbikers are.

  9. Animals

    Frogs Play Tree: Male tunes his call to specific tree hole

    Borneo's tree-hole frog may come as close to playing a musical instrument as any wild animal does. [With audio file.]

  10. Health & Medicine

    Cluster Bombs: Metabolic syndrome tied to heart disease deaths

    Men with a certain cluster of metabolic characteristics are about three times as likely to die of heart disease as men without the traits are.

  11. Materials Science

    Nanotube ID: New signatures aid nanotech progress

    Researchers have developed a means for rapidly distinguishing among 33 semiconducting varieties of carbon nanotubes.

  12. Astronomy

    Hubble Weighs In: Pinning down an extrasolar planet’s mass

    Using a decades-old technique, astronomers have precisely measured the mass of a planet outside our solar system.

  13. Tech

    Deadly Bubble Bath: Ultrasound fizz kills microbes under pressure

    A modest pressure increase on a liquid agitated by ultrasound dramatically boosts the microbe-killing power of those high-frequency sound waves.

  14. Earth

    Solving Hazy Mysteries

    Aerosols such as smoke, soot, and sea spray make for hazy vistas and stunning sunrises, but they also play major roles in Earth's climate and atmospheric chemistry.

  15. Earth

    Ocean View

    Ocean observatories have revealed unexpected discoveries, and now scientists want to widen the lens.