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Three years after bariatic surgery, most people experienced health improvements. Yet some people benefited much more than others. Figuring out those differences would help doctors and patients understand who should have surgery and who should avoid it.

ESPN sports commentator Howard Bryant talks to Weekend Edition Saturday host Scott Simon about the week's top sports stories, including the NBA conference finals, the NHL, and Serena Williams' dominance at the French Open tennis championships.

A Chinese company plans to buy U.S. pork giant Smithfield Foods for nearly $5 billion. The deal may undergo review by an interagency panel known as the Committee on Foreign Investment in the U.S. The panel has played a significant role in shaping foreign investments in this country for nearly four decades.

The infamous Boston mobster Whitey Bulger is on trial after decades of alleged crimes, including 19 murders. Weekend Edition Saturday Host Scott Simon talks with Dick Lehr, co-author of "Whitey: The Life of America's Most Notorious Mobster," about the trial.

While most of the news about elephants out of Africa concerns poaching and falling numbers, South Africa has the opposite problem. Its elephant populations have grown greater than the country can manage.

With a raft of cybersecurity proposals under consideration in Congress, the U.S. business community is making increasingly clear that it opposes new regulations that would require private companies to adhere to minimum performance standards or report all cyber intrusions they experience to the government.

Water wells and streams in Leroy Township, Pa., have been bubbling up with methane gas in the past few months. The state's Department of Environmental Protection blames nearby natural gas fracking operations. A local well operator has installed water filters for residents and says the problem has been fixed.

But it said its failures did not directly contribute to the blast, which killed 29 coal miners in 2010.

Many top athletes are rejecting the processed drinks and gels companies are squarely aiming at them. Instead, they rely on old fashioned water and healthy food to rehydrate and replenish nutrients.

Farm worker advocates and top Obama administration officials have been pushing hard for new regulations that would improve safety for teenagers working on farms. But facing fierce opposition from the agriculture industry and its allies in Congress, the Department of Labor abruptly withdrew a set of rules that advocates said could save dozens of lives every year.