Physicists working with molybdenum-84, a nucleus containing exactly 42 protons and 42 neutrons, have found that this seemingly balanced atom defies one of nuclear physics’ longest-standing ...

The United States is on a mission to modernize its aging nuclear weapons stockpile. And physicists have feelings about it — and the future of nuclear weapons more broadly. To work on nuclear weapons, ...

A nuclear escalation in the Middle East would trigger a global catastrophe. Know the physics behind nuclear weapons, and the ...