This documentary explores the idea of multiple universes, and multiple instances of our own universe which are all running at the same time; according to the theory described here there is another universe where the Germans won world war 2 and where you are the president of the united states.

"Which Universe are we in?" takes us into the realm of cutting-edge science where the conventional laws of physics no longer apply. It almost seems too amazingly bizarre however the findings are backed up by observable evidence.