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The world's soil is in trouble. Ecologists say without dramatic changes to how we manage land, vast swathes of grassland are at risk of turning into hard-packed desert. To make sure that doesn't happen, researchers are testing out innovative ways to keep moisture in the soil.

The question of how to treat ductal carcinoma in situ is roiling the medical profession, and making for tough choices for women. The condition may never become invasive cancer. But some women choose to have mastectomies rather than live with uncertainty.

Over the weekend, the western Kentucky town of Fancy Farm was the site of the first meeting between Senate Minority Leader Mitch McConnell and his likely Democratic opponent, Kentucky Secretary of State Alison Grimes. National Democrats promise to make defeating McConnell the top priority as they head into a mid-term election that offers Republicans a good chance of taking control of the Senate.

E-books have changed the world of publishing in fundamental ways. The business model that encouraged publishers to support the work of public libraries has changed to such an extent that this relationship has been stressed to the point of non cooperation.

Julius Chambers argued numerous civil rights cases before the U.S. Supreme Court - and won them all. Host Michel Martin remembers the groundbreaking attorney, who passed away recently at the age of 76.

As fans and teams get ready for another season of football, a new study sheds light on game safety. Host Michel Martin talks with Jesse David of Edgeworth Economics about whether efforts to cut down on serious injuries are getting results.

The country-music star and steel guitarist's new album features Merle Haggard and Buck Owens covers.

Do big league hitters have naturally faster reflexes? Are African-Americans predisposed to be better athletes? In his new book, Sports Illustrated's David Epstein says science now has answers — or at least insights — to all these questions.

The George Zimmerman trial is expected to wrap up this week. Zimmerman shot and killed teenager Trayvon Martin last year in what he said was self-defense. Host Michel Martin checks in with Orlando Sentinel reporter Rene Stutzman about her view from inside the courtroom.

George Zimmerman's defense team is wrapping up its case. Host Michel Martin talks with law professors Paul Butler and Pamela Bucy Pierson about some of the legal strategies at play so far, and if this case could affect self-defense laws across the country.