News
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- Chemistry
Stopping batteries from starting fires
A new flame-retardant substance could make rechargeable lithium-ion batteries practical for powering electric vehicles.
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Sleepyheads’ brains veer from restful path
Unusual patterns of brain activity appear in sleep-deprived volunteers trying to solve verbal and mathematical problems.
- 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.
- 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.
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Drugs order bacteria to commit suicide
Seeking to explain how antibiotics work, scientists find a protein that commands bacteria to kill themselves.
- Earth
El Niño: It’s back!
An increase in ocean temperatures in the central Pacific heralds the onset of El Niño, whose effects should show up in the United States this fall.
