Next week marks 80 years since the U.S. dropped atomic bombs on Japan. NPR's Scott Simon talks to Garrett Graff about his book "The Devil Reached Toward The Sky," which recounts the bomb's creation.

The state health official who led Michigan's efforts to build work requirements into Medicaid says other states will soon be learning some very lessons about what is involved and how much it costs.

NPR's Scott Simon asks Rep. Don Bacon, R-Neb., about Bacon's trip to Mexico to foster cooperation in ongoing trade talks.