Vol. 157 No. #7
Archive Issues Modal Example

More Stories from the February 12, 2000 issue

  1. Health & Medicine

    Researchers Probe Cell-Phone Effects

    Scientists are trying to find out whether biological changes associated with cell-phone use represent health risks.

  2. Drugs order bacteria to commit suicide

    Seeking to explain how antibiotics work, scientists find a protein that commands bacteria to kill themselves.

  3. Astronomy

    Solar magnetism: Memories are made of this

    Despite all its upheavals, the sun's magnetic field has a built-in memory, allowing it to return to its original position and configuration.

  4. Humans

    R&D budget should ease biomed envy

    President Clinton's science budget for 2001 proposes to narrow a gap that's yawned in recent years between lusher funding for biomedicine and leaner support for the physical sciences.

  5. Sleepyheads’ brains veer from restful path

    Unusual patterns of brain activity appear in sleep-deprived volunteers trying to solve verbal and mathematical problems.

  6. Chemistry

    Stopping batteries from starting fires

    A new flame-retardant substance could make rechargeable lithium-ion batteries practical for powering electric vehicles.

  7. Animals

    Flight puts the fight back into crickets

    Researchers are just discovering what gamblers in China have known for centuries—flying can make a losing cricket fight again.

  8. Physics

    Ultracold molecules form inside superatom

    The formation of molecules within an ultracold gas of atoms called a Bose-Einstein condensate could be a step toward fluids in which molecules share the same quantum state.

  9. Health & Medicine

    AIDS drugs may cause bone loss

    Using X rays to measure bone density in HIV-infected men, researchers find a possible link between bone loss and long-term use of protease inhibitors.

  10. Health & Medicine

    HIV may date back to the 1930s

    Genetic analysis of the AIDS virus suggests it first infected humans in the first third of the 20th century.

  11. Health & Medicine

    One more reason to worry

    A single dose of the AIDS drug nevirapine, given to mothers to help prevent them from infecting their children during birth, may be enough to prod the virus to develop drug resistance.

  12. Physics

    Spectral atom rings in

    Electron waves can generate a phantom atom when a real atom is placed at the right spot inside an elliptical quantum corral, or loop of atoms, arranged on a surface.

  13. Astronomy

    Revved-Up Universe

    Astronomers are busy testing the seemingly bizarre notion that the expansion of the universe is accelerating.

  14. Keeping Bugs from Pumping Drugs

    Researchers hope that attacking the machinery some microbes use to pump antimicrobial agents out of their cells may help deal with the increasing problem of drug resistance.