News
- Astronomy
Cosmic Push: X-ray study confirms universe’s dark side
Culling clues from X rays emitted by distant clusters of galaxies, astronomers report new evidence that some mysterious force overcame gravity's tug about 6 billion years ago and ever since has been pushing galaxies apart at an accelerating rate.
- Earth
Big Thaw Coming: Climate change may slam Arctic
If the changes in climate predicted for this century come to pass, the people and creatures of the Arctic will face some of the largest challenges.
- Health & Medicine
Cutting blood supply to kill off fat
Killing the blood vessels that sustain fat tissue causes obese mice to lose weight.
- Chemistry
Strange brew brings inorganic chemicals to life
A mixture of inorganic chemicals spontaneously forms cell-like structures that behave like tiny chemical reactors.
- Health & Medicine
Estrogen loss induces lung disease in mice
Estrogen loss hampers lung function in mice by sabotaging the alveoli, the tiny sacs that deliver oxygen-rich air to the bloodstream.
- Astronomy
Live! Venus’ transit on the Web
On June 8, astronomers in Europe plan to Webcast observations of the transit of Venus, the first time the planet has passed across the face of the sun as seen from Earth in 122 years.
- Health & Medicine
Folate enrichment pays baby dividends
The federally mandated fortification of grain-based foods with folic acid has led to a 25 percent drop in the rate of potentially life-threatening neural tube birth defects.
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Worm life span set by chromosome tips
For worms, longer chromosome tips mean longer lives.
- Humans
Young Talent on Display: Tomorrow’s scientists and engineers win recognition, rewards
The three top winners of the 2004 Intel International Science and Engineering Fair hail from high schools on different continents.
- Earth
A Portrait of Pollution: Nation’s fresh water gets a checkup
Virtually all of America's fresh water is tainted with low concentrations of chemical contaminants, according to a new nationwide study.
- Materials Science
Branching Out: Semiconducting nanotrees could boost electronics
Forests of semiconducting nanotrees could form the basis of future solar cells, low-energy lighting, and other optical or microelectronic devices.
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Breeds Apart: Purebred dogs defined by DNA differences
The most thorough DNA analysis yet of purebred dogs suggests that canine breeds can also be discerned genetically with great accuracy.
