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Ultraviolet light can burn your skin and raise the risk for skin cancer. New research has helped uncover how the rays can weaken skin's outer layer, compromising its ability to protect the body.

America's top general is in Afghanistan, in part to discuss how to stop the "green on blue" attacks that have left 10 U.S. military personnel dead in just the past two weeks. One step that's already been taken: Armed coalition soldiers are now watching their Afghan counterparts during missions.

Mount Sinai School of Medicine is adding a Department of Family Medicine. It is now one of the only top medical schools to offer family medicine as a specialty for its students.

The U.S.-China economic relationship is under pressure again with allegations from the House Intelligence Committee that two top Chinese telecom firms are security threats. China responded by saying the report could damage relations with the U.S.

When researchers asked hospitals how much a total hip replacement would cost a 62-year-old woman paying cash, a surprising number couldn't or wouldn't say. Health care could learn something from the car industry about working with consumers, critics say.

GOP presidential candidate Mitt Romney's choice of Rep. Paul Ryan as his running mate seems to be uniting both Republicans and Democrats. Here's a quick look at the pluses and minuses of the decision, from the point of view of the man at the top of the ticket.

In 2010, writer Don Winslow hit it big with his crime novel, Savages. Although he'd already written 12 novels, Savages was the book that really launched his career. It made it to the top of The New York Times best-sellers list. His new book, The Kings of Cool, is a prequel to Savages.

Though he went on to a string of Top 40 solo hits, Art Garfunkel is still best known as half of a legendary duo. With the release of a new retrospective, which covers his work from Simon & Garfunkel's heyday through the present, Garfunkel says he's looking for some long-overdue credit.

The U.S. Air Force's top officer, Gen. Norton Schwartz, is retiring after four years on the job. Schwartz was a champion of remotely piloted aircraft, or drones. But he says the Air Force will continue to need pilots for decades and more manned aircraft to ensure it can prevail with a minimum use of force.

The only trend in stadium beer is that prices go up, according to one industry watcher. Analysis by online financial website TheStreet.com found that Marlins Park has the most expensive beer of any baseball stadium. But, ounce for ounce, Miami's not even in the top 10 for expensive beer.