This received a "starred review" at Booklist.

Another universe may be floating just a millimeter away on a "brane" parallel to our own, but we can't pop our heads in and have a look around because it exists in hyperspace.

Well-known physicist and author Michio Kaku will excite readers with his vision of realms that may exist just beyond the tip of our noses.

Speculating about escape routes through spacetime into parallel universes, Kaku presents a riveting popular treatment of the string revolution in physics.