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People are asking how much arsenic in food is too much, but they're not getting answers. Scientists say they know a lot less about arsenic in food than they do about the toxic element's effects in drinking water.

Science fiction's job is to give us a map of where we're headed. From Jules Verne to William Gibson, sci-fi authors describe their visions of the future, and how people might live in it. We ask Intel's futurist for his list of favorite sci-fi books.

In 2004 he nearly lost his life, and a leg, in Iraq. But Canon worked hard at rehab and his doctors performed one of the most extensive limb constructions ever tried. NPR followed his story. Last week, 29-year-old Canon died.

Elderly people taking Haldol, an older antipsychotic, were twice as likely to die within six months of starting the drug as those taking Risperdal, a commonly used newer drug. Older antipsychotic drugs shouldn't be used to dementia symptoms in the elderly, a new study of the options concludes.

Today's media environment only encourages outrageous statements. Attacking Girl Scouts, threatening to kill U.S. senators and invoking the Bible to limit teachers' pay have all drawn headlines for lawmakers in recent weeks.

The guitarist was recruited by Sonny Rollins at age 16, and he's been dazzling listeners and fellow musicians ever since. Hear him perform The Beatles' "Can't Buy Me Love" with host Marian McPartland.

Police in riot gear were called in to control a crowd waiting to buy a pair of limited edition Nike sneakers in Orlando. The incident is the latest in a string of violent outbreaks connected to shoe releases.

Bathtub refinishing has become a popular remodeling project. But a chemical used in the process produces highly toxic fumes. And it's not just sold just to the pros; it's also in dozens of products sold in home-improvement stores. Researchers say people should be very careful using solvents in the home.

The Red Cross said two foreign journalists were among those evacuated.

Computer chip makers have long struggled to build ever-smaller transistors to allow faster, more powerful computers. Writing in the journal Nature Nanotechnology, a team of scientists describes what may be the ultimate limit of that struggle — a transistor made of a single atom. Michelle Simmons, a physicist at the University of New South Wales in Australia and leader of the project, discusses the work.