A near-disaster at a federal nuclear weapons laboratory takes a hidden toll on America’s arsenal

Repeated safety lapses hobble Los Alamos National Laboratory’s work on the cores of U.S. nuclear warheads. By Patrick Malone.
Read more: http://www.sciencemag.org/news/2017/06/near-disaster-federal-nuclear-weapons-laboratory-takes-hidden-toll-america-s-arsenal?source=Snapzu