A Physicist Explains Why Parallel Universes May Exist

It is possible that there are many other universes that exist parallel to our universe. Theoretical physicist Brian Greene, author of The Elegant Universe, explains how that's possible in the new book, The Hidden Reality.

Source: http://www.npr.org/2011/01/24/132932268/a-physicist-explains-why-parallel-universes-may-exist?ft=1&f=1057

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