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The Associated Press reports that International Atomic Energy Agency officials are concerned that Iran may be trying to cover up evidence related to nuclear weapons. That could fuel the debate over U.S. options for addressing Iran. Host Michel Martin talks with Democratic Senator Richard Blumenthal, who is on the Senate Armed Services Committee.

Detailed tests in kidney cancer patients. help explain why some treatments may not be successful. And they underscore the challenge in developing personalized tests and drugs for effective cancer therapy.

Both organizations claim credit for the "bombshell" video, but NPR's David Folkenflik finds that the video was aired in '08 by PBS and also adds little to our understanding of President Obama.

The arguments continue over the merits of the viral video and Kony 2012 social media blitz that this week have exploded onto the Web.

The Afghan security forces now include hundreds of women, but they can face significant risks. In the northern city of Mazar-e-Sharif, policewomen say abuse is widespread and even includes rape by their male colleagues.

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.

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.

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.

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.

To date, U.S. military tribunals have been reserved for al-Qaida and Taliban suspects. But now the Obama administration is seeking to try a Lebanese man accused of orchestrating the killings of five American soldiers in Iraq.