Stephen Hawking answering questions about his planned zero-gravity flight.
Stephen Hawking to go on zero-gravity flight AP For a few seconds on Thursday, the celebrated British physicist and author will float free, unrestricted by his paralyzed muscles and his wheelchair as he floats weightless on a zero-gravity flight aboard a jet plane.
Dogs - happy or scared - appear to talk with their tails By SANDRA BLAKESLEE Researchers in Italy say that dogs, like human beings, have dominant left- and right-brain responses, and the difference can be seen in their wags. When dogs feel fundamentally positive about something or someone, their tails wag more to the right side of their rumps. When they have negative feelings, their tail wagging is biased to the left. - Video: Analysing a tail wag
Bush presses campaign against malaria AP President George W. Bush pledged to lead the world in preventing and eradicating Malaria, a major killer of African children.
Susan Lindquist: Peering into the causes, and possible cures, of diseases like Parkinson's By CLAUDIA DREIFUS Susan Lindquist, a professor of biology at the Massachusetts Institute of Technology, talks about her work with molecular proteins as they change shape in cell division. The process, called protein folding, can - when it goes wrong - lead to diseases like Alzheimer's and Parkinson's.
Chocolate linked to low blood pressure By NICHOLAS BAKALAR Eating dark chocolate may be almost as effective at lowering blood pressure as taking the most common anti-hypertensive drugs, a review of studies has found. Tea, on the other hand, appears to be ineffective.
Many adolescents, many problems. Where are the doctors? By JAN HOFFMAN Adolescent medicine might be expected to be booming. The nation has about 40 million people ages 10 to 19. But a decade after adolescent medicine became board certified as a subspecialty, it is in little demand by doctors seeking to advance their careers.
Stirrings of grandeur in Russia's Arctic By STEVEN LEE MYERS A place of explorers, adventurers and survivors, Chukotka is one of Russia's most remote regions, but its tiny population has some big ideas.
Josh Bernstein: Searching for the Holy Grail in a Land Cruiser By STACEY STOWE Bernstein is the swashbuckling host of a program that looks for mysteries like the lost cities of Atlantis and El Dorado. He's leaving the History Channel for Discovery, where he wants his show to focus more on ecological problems.
When Orri Vigfusson heard that wild salmon populations were plummeting off his native Iceland, he decided to use the skills he learned as a banker and vodka entrepreneur to save what he considered "the most spectacular creature on Earth."
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