News
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One-gene change makes mice neurotic
Researchers have engineered a strain of stressed-out mice by knocking out one gene.
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Good guys and bad guys share tactics
A microbial odd couple—the brucellosis pathogen and a nitrogen-fixer for plants—need the same gene to settle into their hosts long-term.
- Health & Medicine
From rabies virus to anti-HIV vaccine
Researchers working with mice are trying to fashion an HIV vaccine by using a weakened rabies virus to bring an HIV glycoprotein to the attention of the immune system.
- Astronomy
Black holes and their galaxies: A closer link
Supermassive black holes and the galaxies they inhabit appear to grow up together.
- Planetary Science
Rocks on the ice
Pristine fragments of a meteorite that fell January 18 in the frozen Yukon and that remained frozen until they were delivered to a NASA laboratory may reveal much about the earliest days of the solar system.
- Anthropology
Lucy on the ground with knuckles
Some early human ancestors appear to have walked on all fours using their knuckles, much as chimpanzees do.
- Anthropology
Goat busters track domestication
People began to manage herds of wild goats at least 10,000 years ago in western Iran.
- Tech
Microdevice weds electronics, light fibers
By altering the chemical structures of dyelike molecules called chromophores, researchers have created tiny, low-voltage devices for converting electronic signals into light waves.
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Cooperative strangers turn a mutual profit
In social exchanges, monkeys and people often appear to act according to the principle that "one good turn deserves another."
- Tech
Coal: The cool fuel for future jets
To power faster supersonic jets, scientists are developing coal-derived fuels that can absorb heat without breaking down at high temperatures.
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How whales, dolphins, seals dive so deep
The blue whale, bottlenose dolphin, Weddell seal, and elephant seal cut diving energy costs 10 to 50 percent by simply gliding downward.
- Earth
Gasoline additive’s going, but far from gone
As the federal government proposes phasing out the gasoline additive MTBE, scientists explore ways to remove this potential carcinogen from drinking-water supplies that it has tainted throughout the nation.
