Documents with sensitive details about the meeting between President Trump and Russian President Putin were left behind on a ...

While atomic bomb survivors warn the catastrophic risks, leaders of nuclear-armed states and self-proclaimed 'realists' argue that the deterrence of nuclear weapons is what keeps them from being ...

A new study finds that chimpanzee babies learn vocal and visual communication patterns from their mothers. The findings may shed light on the way human babies learn from those close to them.