News
- Health & Medicine
Weight-loss pill carries risks
The drug ephedra and its presumed active ingredient, ephedrine, provide only modest weight-loss effects and pose health risks.
- Astronomy
All-sky survey makes Internet debut
An atlas of some 5 million images from the Two Micron All-Sky Survey is now available online.
- Earth
Mapping watersheds invites comparisons
Computerized maps of environmental features for 154 of the largest river watersheds will soon be available to the public, free of charge.
- Health & Medicine
Microbicide thwarts AIDS virus in monkey test
A microbicidal gel applied vaginally prevents some transmission of the AIDS virus in monkeys.
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Virus boosts fat in chickens and mice
Injecting mice and chickens with a type of adenovirus that causes colds in humans led to higher body fat, though not higher body weight, and researchers point to indirect evidence for a role for the virus in human obesity as well.
- Earth
Lack of spring snowpack bodes ill for many
NASA satellite images released last week confirmed that the northern United States had much less snow cover than normal this spring, following North America's warmest winter on record.
- Plants
Team corners culprit in sudden oak death
After 5 years of mystery, California pathologists announced they may have identified the cause of a new tree disease called sudden oak death.
- Physics
Why is antimatter absent? Hunt heats up
Two new particle accelerators built to help discover why there's matter instead of antimatter in the universe are closing in on an answer at record speed.
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Ebola protein explains deadly mystery
The infamous virus called Ebola has a surface protein that kills cells in blood vessels.
- Astronomy
Evidence grows for nearby planetary system
Astronomers have found the nearest known planet that lies outside the solar system, a mere 10.5 light-years from Earth.
- Chemistry
Crystal Reveals Unexpected Beginnings
For the first time, researchers have directly observed a protein begin to crystallize, and they've found it has a peculiar shape.
- Astronomy
Cosmic Blowout: Black holes spew as much as they consume
Supermassive black holes at the cores of galaxies can blow out as much material as they swallow, creating high-speed winds that may seed the universe with oxygen, carbon, iron, and other elements essential for life.
