6,775 results
6,775 results for: Bears
- Humans
Science News of the Year 2000
A review of important scientific achievements reported in Science News during the year 2000.
- Earth
Ash Clouds: Severe storms can lift smoke into stratosphere
New field observations, satellite images, and computer models suggest that a severe thunderstorm, enhanced by heat from forest fires, can boost soot, smoke, and other particles as far as the lower stratosphere, an unexpected phenomenon.
- Earth
Ash Clouds: Severe storms can lift smoke into stratosphere
New field observations, satellite images, and computer models suggest that a severe thunderstorm, enhanced by heat from forest fires, can boost soot, smoke, and other particles as far as the lower stratosphere, an unexpected phenomenon.
-
Beyond Clots: Platelets in blood may guide immune response
Platelets, best known for their ability to create blood clots in wounds, may also have a role in the immune system.
- Tech
Sixth Sense
A budding technology called electric field imaging may soon enable devices such as appliances, toys, and computers to detect the presence of people and respond to their motions.
-
- Materials Science
Diatom Menagerie
Materials scientists are trying to coerce diatoms into making silicon-based microdevices with specific features.
- Materials Science
Miniature Motor: Nanotubes central to new rotating device
Researchers have used miniature, nested cylinders, called multiwalled carbon nanotubes, to make a motor only 300 nanometers long.
-
Calcium Makes Germs Cluster: Ion dilution leads cholera bacteria to disperse
A protein on the surface of cholera-causing bacteria enables the pathogens to clump together in seawater and to scatter when they enter fresh water, perhaps facilitating seasonal outbreaks of cholera in coastal areas.
- Planetary Science
Martian Invasion
If all goes according to plan, three spacecraft—one in December, two in January—will land on the Red Planet, looking for evidence that liquid water once flowed on its surface.
-
Beg Your Indulgence
The Japanese concept of amae, in which one person presumes that another will indulgently grant a special request, may apply to different forms of behavior at different ages, even in Western countries.
-
Protein Portal: Enzyme acts as door for the SARS virus
A protein that regulates blood pressure also serves as the cellular portal for the SARS virus.
