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Dr. John Marler of the National Institutes of Health talks with Madeleine Brand about Arteriovenous Malformation, the condition that reported caused the bleeding in Sen. Tim Johnson's brain.

Two Philadelphia museums are scrambling to raise $68 million to hold on to a local art treasure. If they fail to reach their goal by a Dec. 26 deadline, "The Gross Clinic," Thomas Eakins' 1875 masterpiece, will be sold.

A new discovery by some Southern California scientists could bring the auto industry one step closer to being able to use hydrogen to fuel cars. KPBS reporter Beth Ford Roth has the story.

U.S. law enforcement has introduced robots to help protect local communities from improvised explosives. In San Diego County, the sheriff’s department uses the new device to disarm bombs and protect

Following a lengthy debate on science and life, the House passes a ban on all human cloning. The measure covers clones created for medical research, and envisions stiff fines and prison sentences for violators. NPR's Andrea Seabrook reports.

Mailuu-Suu, Kyrgyzstan, was once an elite Soviet industrial town, where uranium was mined and processed. The mining came to a stop in the 1960s. The radioactive waste remains, and little has been done to protect the town's more than 20,000 residents.

Tuesday’s primary election will pit incumbent San Diego Mayor Jerry Sanders against well-heeled businessman Steve Francis. With three other candidates in the race, there’s a good chance neither fron

Former Vice President Al Gore and the U.N.'s Intergovernmental Panel on Climate Change were awarded the 2007 Nobel Peace Prize Friday for their efforts to spread awareness of man-made climate change and lay the foundations for counteracting it.

Australians Robin Warren and Barry Marshall receive the 2005 Nobel Prize in Physiology or Medicine. Their research bucked conventional wisdom, showing that a bacterium, not simply excess stomach acid, causes peptic ulcers. Also, it suggested that bacterium may be a major cause of stomach cancer.

Type 2 diabetes is no longer a disease of old age. Increasingly, the disease is hitting people in the prime of life. But research shows that for some people, diet and exercise can be just as effective as drugs in preventing the disease.