Investigators have found the first gene involved in the mammalian biological clock, the internal timepiece that regulates activities ranging from sleeping to eating.
Deep Blue defeated world chess champion Garry Kasaprov in a six-game match.
A computer model suggests that preventive mastectomies for some women carrying a breast cancer gene may add to their life expectancy.
A particularly severe form of bereavement known as traumatic grief appears to increase the likelihood of physical and mental problems as many as two years after a spouse's death.
Many researchers in Grand Forks, N.D., are tallying staggering -- and, in some cases, long-term -- losses.
Two new instruments installed aboard the Hubble Space Telescope last February are proving their mettle.
Crystal structure and impurities may explain why some materials give off light when fractured.
Astronomers have deduced the presence of additional planets orbiting nearby stars.
A new interpretation of a recent pair of Hubble Space Telescope images has revived controversy about the origin of a gamma-ray burst detected in late February.
Researchers suggest cystic fibrosis is widespread because the genetic mutations that produce the disease can also offer protection against typhoid fever.
An enzyme isolated from bacteria that feed on cocaine may one day serve as a simple sensor of the drug.
Excavations at a 4,000-year-old city in Turkey have uncovered a planned community of dwellings that bears a strong resemblance to modern urban settings.
A 153-county area in the southeastern United States has a particularly high incidence of stroke.
A DNA vaccine protects chimps from HIV infection.
Some small fry are exquisitely sensitive models of dioxin vulnerability
In studying the hitherto largely unrecognized toxicity of dioxinlike compounds in fish, scientists stumbled onto a new model for probing the pollutants' effects in higher animals.
Antibiotics don't fight many infections well, yet doctors continue to prescribe them
As resistance to antibiotics grows, doctors scramble for new ways to deal with tougher bugs.
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