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After a launch that failed last fall, the administration is hoping this year's open enrollment period goes more smoothly, by letting customers browse first.

Never mind the physics. Color isn't just a particular wavelength of light, it turns out. It's a fascinating mix of context and what's happening outside and inside your head.

Can you run a clinical trial without a placebo group? That's one of the questions facing researchers in West Africa.

Former President George W. Bush sits down with host David Greene to discuss his new book, 41, a biography of his father and fellow former President George H.W. Bush.

Gen. John Campbell leads the U.S. forces in Afghanistan. On Veterans Day, he offers his assessment of the war as the U.S. winds down its presence and hands over responsibility to the Afghans.

Supporters of expanded trade with Asian nations hoped this week would bring completion of a major deal, but U.S. and Japanese negotiators — and Obama and congressional Republicans — still don't agree.

More than 80 surgeries were performed on women at a government-run camp Saturday; the first death was reported Monday morning.

A British Army private died of dysentery 99 years ago. A sample of the bug that killed him may help researchers develop a vaccine for this antibiotic-resistant disease, a top killer of young kids.

The prosthetics industry is rapidly growing, allowing patients to better customize their devices, control them using their nervous system, and even regain a sense of touch.

The court is being asked to decide whether a 2010 state legislative redistricting in Alabama overloaded some districts with black Democrats on the basis of race or party.