Four out of five adults in the U.S., in any given week, take some type of prescription drug or dietary supplement. And they rarely consult their pharmacist about matters like drug interactions.

We get a report from hearings on drug safety and liability laws, with testimony from actor Dennis Quaid, and on challenges in caring for and treating people with degenerative diseases, with testimony from retired Supreme Court Justice Sandra Day O'Connor. Also, a vote expected on the farm bill today. Our guest is Joe Williams, deputy Washington D.C. bureau chief for The Boston Globe

The comedian and talk radio host is running for the U.S. Senate in Minnesota. He's a leading contender to get the Democratic nomination to run against Republican incumbent Norm Coleman in the fall. Joshua Green, senior editor at the Atlantic Monthly, says Franken's campaign is no joke.

The British National Archive is releasing thousands of previously secret documents today about UFO sightings in the U.K. in the late 1970's and early 1980's. We talk to UFO expert Dr. David Clarke about the significance of the documents' release.

We speak to poet and Virginia tech professor Nikki Giovanni. In a new book for children with illustrations by Chris Raschka, Giovanni retells Aesop's fable of the grasshopper and the ant, asking: what if the grasshopper took the ants to court and claimed that his art helped their labors?