An article sent by Los Alamos National Laboratory director Siegfried Hecker to lab employees in 1995, on the 50th anniversaries of the bombings of Hiroshima and Nagasaki.

By instituting a two-person rule for US nuclear weapons use, Donald Trump will have single-handedly reduced the danger of ...

Siegfried Hecker, former director of the Los Alamos National Laboratory, expresses concern that, 80 years after the bombings ...