11 times the world stood on the brink of nuclear apocalypse (and why we're still here)

A 46-cent microchip nearly started Armageddon - as did a Doomsday training tape when it was accidentally fed into live ...

11 nuclear close calls when world stood on brink of apocalypse

A 46-cent microchip nearly started Armageddon - as did a Doomsday training tape when it was accidentally fed into live warning systems ...