Powder created by the drill was sucked up into the robot for analysis. Will it show evidence of moisture?
For the first time, scientists report, they have found bacteria living in the cold and dark deep under the Antarctic ice, a discovery that might advance knowledge of how life could survive on other planets or moons and that offers the first glimpse of a vast ecosystem of microscopic life in underground lakes in Antarctica.
Earth-like worlds may be closer and more plentiful than anyone imagined.
Experts worldwide are gathering measurements to try to use historical markers to solve a vexing scientific problem: What's the limit on how much the ocean is capable of rising if temperatures increase as much as expected in this century?
For all the adorable images of cats that play the piano, flush the toilet, mew melodiously and find their way back home over hundreds of miles, scientists have identified a shocking new truth: Cats are far deadlier than anyone had realized.
Scientists have found a world of bacteria and fungi floating about 30,000 feet above Earth.
In the 1970s, women's health advocates were highly suspicious of mastectomies. They argued that surgeons -- in those days, pretty much an all-male club -- were far too quick to remove a breast after a diagnosis of cancer, with disfiguring results.
While everyone is being urged to get the flu vaccine as soon as possible, some pregnant women avoid it in the belief that it may harm their babies. A large new study confirms that they should be much more afraid of the flu than the vaccine.
Study found that children born under one-child policy are less conscientious and less likely to cooperate.
Remains of this Christian capital suggest the ancient Turkish city could be largely intact underground.
Cleans and protects teeth. Helps prevent cavities. So say popular brands of sugar-free gum. But do their claims stand up to scrutiny? Many brands contain xylitol, a natural sweetener known to fight cavity-causing bacteria. But it's not clear that xylitol has much impact. Some research suggests that while sugar-free gum does prevent cavities, xylitol per se is not responsible. One new study, published this month in the Journal of the American Dental Association, tracked 691 adults for three years. The subjects were randomly assigned to groups consuming xylitol lozenges five times a day or a placebo. Those who received the xylitol had no statistically significant reduction in cavities. NEW YORK TIMES