Health
Nearly 1 in 20 Americans older than 50 have artificial knees, or more than 4 million people, according to the first national estimate showing how common these replacement joints have become in an aging population.
Researchers have encouraging news for women who find themselves in a very frightening situation: having cancer while pregnant. Studies suggest that these women can be treated almost the same as other cancer patients are, with minimal risk to the fetus.
Researchers have encouraging news for women who find themselves in a very frightening situation: having cancer while pregnant. Studies suggest that these women can be treated almost the same as other cancer patients are, with minimal risk to the fetus.
Hold the mystery meat: Military mess halls soon will be serving more fruits, vegetables and low-fat dishes under the first program in 20 years to improve nutrition standards across the armed services.
Scientists say NASA is about to propose major cuts in its exploration of other planets, especially Mars. And NASA's former science chief is calling it irrational.
The number of people claiming they were injected with the parasite causing malaria at a Vienna psychiatric ward while teenagers grew to seven Thursday, with the lawyer representing six of them saying their accounts, given separately, are credible because they are similar.
Federal weather forecasters say the La Nina weather phenomenon that contributed to the southwestern U.S. drought is winding down.
More and more U.S. adults are being told by their doctor to get out and exercise, according to government survey released Thursday.
Efforts by India and the European Union to strengthen trade are threatening India's ability to deliver lifesaving medicines to the world's poorest, analysts say as the two sides push through protracted negotiations on a free-trade pact.
If scientists find microbes in a frigid lake two miles beneath the thick ice of Antarctica, it will illustrate once again that somehow life finds a way to survive in the strangest and harshest places.
People learned better when a key part of their brains got mild zaps of electricity, a finding that may someday help Alzheimer's patients keep more of their memories.
The ancient Chinese exercise of tai chi improved balance and lowered the risk of falls in a study of people with Parkinson's disease.
Trust your doctor? A survey finds that some doctors aren't always completely honest with their patients.
The ruins aren't particularly impressive, just some stone and clay footings for houses that probably supported walls of wood or clay wattle. And it's that very ordinariness that has experts excited.
Researchers say an ocean experiment that was accidentally conducted amid the shipping silence after Sept. 11 has shown the first link between underwater noise and stress in whales.
An ocean experiment that was accidentally conducted amid the shipping silence after Sept. 11 has shown the first link between underwater noise and stress in whales, researchers reported Wednesday.
