More on the Universe from Dr. Fred Alan Wolf
Fred Alan Wolf is a theoretical physicist and international lecturer on consciousness and the new physics. He is an award-winning author of eight books, including The Spiritual Universe, The Dreaming Universe, Parallel Universes, and Taking the Quantum Leap.

More on the Universe from Brian Greene
Physicist Brian Greene is a best selling author and champions the hot but controversial "Superstring Theory," which asserts the universe is made up of tiny vibrating strings. The author uses metaphors and analogies from everyday life to make even the most obtruse ideas accessible to the lay reader.