Today, most of the uranium that powers U.S. nuclear reactors is imported. But many communities still suffer impacts of uranium mining and milling that occurred for decades to fuel the U.S.-Soviet nuclear arms race.

By Stephanie Malin, The Conversation

North Korea is expanding its capacity to mine and mill uranium ore which could supply its nuclear weapons program or fuel nuclear reactors, according to new U.S. research.

By Matthew Pennington, Associated Press

LAUSANNE, Switzerland — Iran and six world powers broke off nuclear negotiations ahead of schedule Friday to allow members of the Iranian delegation to attend the funeral of their president's mother, as a senior Russian official suggested that the sides…

By George Jahn, Bradley Klapper, Associated Press

GENEVA — The United States and Iran are working on a two-phase deal that clamps down on Tehran's nuclear program for at least a decade before providing it leeway over the remainder of the agreement to slowly ramp up activities…

By Bradley Klapper and George Jahn, Associated Press