National

The way one fifth of Iowa's residents get health care is about to change. The governor is putting Medicaid in the hands of private insurance companies, and 11 firms are vying for that business.

Leana Wen, Baltimore's new health commissioner, is trying to apply public health approaches to ameliorate the city's deep-seated problems with poverty, violence and disease.

The first official GOP presidential debate is Thursday night in Cleveland. The top 10 candidates — according to an average of five recent national polls — will be on stage. And the seven other candidates will participate in a forum before the debate.

Seventy years ago Thursday, the U.S. dropped an atomic bomb on the Japanese city of Hiroshima. To mark the anniversary, Melissa Block and Audie Cornish read from journalist John Hershey's interviews with the city's survivors in 1946.

Last year, many businesses in Ferguson, Mo., were looted and vandalized in unrest that gripped the city. Customers are starting to return, but some owners don't feel positive about staying here.