Vol. 163 No. #18

More Stories from the May 3, 2003 issue

  1. Health & Medicine

    Protein implicated in Parkinson’s disease

    Inhibiting the natural protein cyclo-oxygenase-2, or COX-2, might help fight Parkinson's disease.

    By
  2. Earth

    Seismic waves resolve continental debate

    New analyses of seismic waves that have traveled deep within Earth may answer a decades-old question about the thickness of the planet's continents.

    By
  3. Planetary Science

    Roving on the Red Planet

    NASA last month selected the landing sites for rovers scheduled to begin exploring the Martian surface next January.

    By
  4. Tech

    Tipping tiny scales

    A prototype detector based on a tiny silicon cantilever that operates in air has achieved a 1,000-fold sensitivity boost when measuring tiny quantities of chemical agents.

    By
  5. Earth

    Harbor waves yield secrets to analysis

    New findings by ocean scientists may help port officials in Rotterdam, the Netherlands, predict potentially destructive waves in the city's harbor.

    By
  6. Physics

    Not even bismuth-209 lasts forever

    Touted in textbooks as the heaviest stable, naturally occurring isotope, bismuth-209 actually does decay but with an astonishingly long half-life of 19 billion billion years.

    By
  7. Egg’s missing proteins thwart primate cloning

    Scientists have identified a reason why cloning a person may be difficult, if not impossible.

    By
  8. Anthropology

    Ancestral Bushwhack: Hominid tree gets trimmed twice

    In separate presentations at scientific meetings, two anthropologists challenged the influential view that the human evolutionary family has contained as many as 20 different fossil species.

    By
  9. Physics

    Crystal Bash: Shocking changes to light’s properties

    Prized, light-manipulating microstructures known as photonic crystals may transform light in new and technologically tantalizing ways when jolted by shock waves.

    By
  10. Earth

    Sensing a vibe

    A sprawling network of seismometers that covers the Los Angeles area could be adapted to provide warning of damaging ground motions from earthquakes in the seconds before those seismic vibes arrive.

    By
  11. Paddle Power: Surprising shape of key cellular pore unveiled

    A molecular pore that controls the flow of ions into cells has an unexpected shape and mechanism.

    By
  12. Chemistry

    Nanoscale Networks: Superlong nanotubes can form a grid

    Researchers have made extraordinarily long carbon nanotubes and aligned them to create tiny transistors and sensors for detecting chemical and biological agents.

    By
  13. Astronomy

    Chemistry of the Cosmos: Quasars illuminate the young universe

    Measuring the composition of some of the earliest structures in the universe, two teams of astronomers have unveiled new findings about star formation in the young cosmos.

    By
  14. Health & Medicine

    Upsetting a Delicate Balance: One gene may underlie various immune diseases

    One form of an immune-system gene shows up more frequently in people with diabetes or certain thyroid diseases than in people free of those illnesses.

    By
  15. Animals

    Ballistic defecation: Hiding, not hygiene

    Evading predators may be the big factor driving certain caterpillars to shoot their waste pellets great distances.

    By
  16. Computing

    Minding Your Business

    By means of novel sensors and mathematical models, scientists are teaching the basics of human social interactions to computers, which should ease the ever-expanding collaboration between people and machines.

    By
  17. Plants

    Any Hope for Old Chestnuts?

    Next year will mark the 100th anniversary of the discovery of chestnut blight in the United States, but enthusiasts still haven't given up hope of restoring American chestnut forests.

    By