A team of California astronomers has come up with new evidence disputing the existence of the first planetlike object found around a star like our sun. The putative planet, detected some 18 months ago at the star 51 Pegasi, has already faced more than its share of scrutiny.
As a group, women who receive breast implants for cosmetic purposes have numerous demographic, lifestyle, and reproductive differences from women in general, according to a study in today's issue of The Journal of the American Medical Association (JAMA).
Scientists have genetically engineered a new strain of mice that may be a model of the early stages of Alzheimer's disease. Even before the brains of human patients develop a hallmark of the disease--the protein clumps called plaques--their memories deteriorate and they lose neurons.
Today is the 290th anniversary of the birth of Carolus Linnaeus, the Swedish botanical taxonomist who was the first person to formulate and adhere to a uniform system for defining and naming the world's plants and animals.
Researchers have long thought that pollution high in the atmosphere may be putting the brakes on global warming by reflecting sunlight back into space. But new measurements presented this week at the American Geophysical Union meeting in Baltimore are casting doubt on that assumption.
A new study of twins suggests that attention-deficit hyperactivity disorder (ADHD) is strongly linked to genes, and that it is less a clear-cut disorder than an extreme form of a trait, like blood pressure, that varies throughout the population.
Today is the 67th birthday of LaSalle Leffall Jr., an American oncologist who has brought attention to the problem of high cancer death rates among minorities, particularly African Americans. Leffall published research in 1973 showing increasing cancer mortality in the U.S. black population.
The Internet has been a boon to science, but paleoanthropologists surfing the Web last week got an unpleasant surprise: A site called Fossilnet is advertising 20,000-year-old human skulls and even older human jaws for sale online.
The rising stock market will be floating more biomedical research. With its endowment soaring, the Howard Hughes Medical Institute (HHMI) of Chevy Chase, Maryland, is expanding its support for scientists at universities and labs around the country.
Women who are obese or who gain significant amounts of weight as adults have a higher risk of the most common kind of stroke, according to a study in tomorrow's issue of The Journal of the American Medical Association.