Morning Edition

Folklorist Alan Lomax spent his career documenting folk music traditions from around the world. Now thousands of the songs and interviews he recorded are available for free online, many for the first time. It's part of what Lomax envisioned for the collection — long before the age of the Internet.

This year's Final Four seems more like Best in Show at the Westminster. Such pedigree: Kentucky, Kansas, Ohio State and Louisville –– four of the very top dogs in the history of the sport. Well, it's a Meryl Streep kind of year, isn't it?

But if the Final Four might delight fans by giving them aristocracy in its teams, unfortunately the whole of college basketball is plagued by anonymity in its players, and external issues that have diminished the popularity of the game.

Good grief. This year, there has been more buzz about Mad Men than about March Madness.

It took a while, but guards at Canada's Glenbow Museum finally noticed a new acquisition in the gallery: An oil painting of a semi-nude woman. An anonymous note said the donor's late father did the painting and had always wanted his work in a museum.

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DAVID GREENE, HOST:

Apple CEO Tim Cook has flown in to China to meet with government leaders. He's trying to work out issues ranging from trademark concerns to treatment of local factory workers who make Apple products.

Hanoi, Hue, Danang and Saigon, were city names that were stamped on the American psyche a half-century ago, when the U.S. waged war in Vietnam. The once war-torn, Southeast Asian nation has made great strides to leave its troubled past behind.

At the Supreme Court, lawyers and justices will continue to spar over the new health care law. Tuesday's debate will center on whether the requirement that everyone carry health insurance — the individual mandate at the heart of the law — is constitutional.

More than 50 international leaders wrapped up talks Tuesday in Seoul, South Korea, on what needs to be done to secure vulnerable stockpiles of plutonium and highly enriched uranium. President Obama hosted the first such summit two years ago. He praised the achievements since then, but said much more needs to be done.

Libertarians say it's like watching dear friends in an ugly divorce, as the billionaire Koch brothers try to take control of the highly regarded Cato Institute. The head of Cato says the Kochs are out to politicize the think tank.

Pope Benedict is in Cuba, Latin America's least Catholic country. He arrived Monday in Santiago, where Cuba's revolution began in 1953. He urged Cubans to seek unity and overcome their divisions, but his message wasn't especially political.