Genetic tests for mutations in the so-called breast cancer genes, BRCA1 and BRCA2, may not reveal as much about cancer risk as earlier reports have estimated, according to two studies published in tomorrow's New England Journal of Medicine.
The discoverer of the Earth's inner core, Danish geophysicist Inge Lehman, was born on this day in 1888. After studying the shock waves from earthquakes recorded on seismographs, Lehman proposed that Earth has a smaller, solid inner core.
WASHINGTON--The Department of Energy (DOE) will delay for 11 days the start of extensive construction on a major laser facility to allow a federal court to hold a hearing on a legal challenge to the $1.2 billion project.
Scientists have discovered why a single mutated protein can lead to serious mental retardation in men with a common genetic disorder called fragile-X syndrome: The healthy protein is essential for establishing during childhood the adult pattern of connections between nerve cells in the brain.
Dorothy Crowfoot Hodgkin, a British x-ray crystallographer who won the 1964 Nobel Prize in chemistry for her cutting-edge work determining the molecular structures of complex organic molecules, was born on 10 May 1910.
Like a desert mirage, a small box with a wire and some sodium atoms can make light curve. This new device, described in the current issue of Physical Review Letters, could someday lead to a new kind of switch for optical computer chips.
Despite a sound mind and fine ears, some 5% to 8% of preschoolers somehow confuse the sounds of consonants and struggle to talk coherently. Now scientists think they know why: The children's brains aren't fast enough to perceive rapidly changing sounds.
Spitting in Singapore may get you thrown in jail, but in nature there are far more lethal results. When a caterpillar drools on a corn leaf, the offended vegetable releases chemical vapors that attract parasitic wasps, which lay eggs in the caterpillar.
MIAMI BEACH--Russia's Mir space station has had its share of problems, from fires to dwindling oxygen supplies. But astronauts there can now worry less about one potential nightmare: the prospect that harmless microbes on Earth may evolve into killers in space.
An analysis of squash seeds and other table scraps dug up in a Mexican cave suggests that people in the Americas gave up hunting and gathering for farming at least 8000 years ago--centuries earlier than previously thought.
UTRECHT, THE NETHERLANDS--In the quest to image ever-fainter and more ancient galaxies, Dutch radio astronomers this week unveiled preliminary plans to build the world's largest radio telescope--a gargantuan device that would combine images from 34 far-flung elements