The concept comes from the work of Edward Norton Lorenz, a mathematician and meteorologist who defined the butterfly effect as: “The phenomenon that a small alteration in the state of a dynamical ...

For these reasons, the board said, the doomsday clock now sits at 11:58, matching the darkest year in the clock's history precisely. Sign up for new weekly newsletter Closing Arguments to get the ...

CHICAGO, Illinois (CNN) --The hands on the Bulletin of Atomic Scientists' Doomsday Clock were moved forward Wednesday to reflect what the group believes is a greater risk of nuclear conflict in ...