Add Yahoo as a preferred source to see more of our stories on Google. While parallel universes are a staple of science fiction, there are some real scientific theories to support them. But if parallel ...

Parallel universes exist. Only rarely do they collide. A mere razor's edge divides them. Feet firmly planted, I straddled that thin dividing line, almost by accident. Standing at the downtown bus stop ...

While parallel universes are a staple of science fiction, there are some real scientific theories to support them. But if parallel universes do exist, could we ever travel to them? It certainly wouldn ...