Explorations is an hour-long radio program on science, technology, politics, and the environment. It is broadcast each week on WBAI and re-aired on stations across the country.

Dr. Michio Kaku graduated from Harvard in 1968, summa cum laude (highest honors), and number one in his physics class. He went on to the Berkeley Radiation Laboratory at the University of California in 1972, and in 1973 Dr. Kaku held a lectureship at Princeton University.

Today, Dr. Michio Kaku holds the Henry Semat Professorship in Theoretical Physics at the City University of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study at Princeton, as well as New York University (NYU).

During the last part of his life and work, Albert Einstein was on a quest to find the "theory of everything", an equation perhaps only an inch long that would unify all four fundamental forces of the universe. Dr. Michio Kaku has continued this quest, and is the co-founder of string field theory, a leading candidate in the search for a "theory of everything."

Dr. Kaku is an internationally recognized authority in theoretical physics and the environment. His most popular and best selling books include Hyperspace: A Scientific Odyssey Through Parallel Universes, Time Warps and the Tenth Dimension and Visions: How Science Will Revolutionize the 21st Century, which have been widely translated in different languages.

Other publications include:

--Beyond Einstein: The Cosmic Quest for the Theory of the Universe
--Metal of Dishonor: How Depleted Uranium Penetrates Steel, Radiates People and Contaminates the Environment
--Weapons In Space
--Nuclear Power: Both Sides

He has also written numerous Ph.D.-level textbooks which have become required reading at many of the top physics laboratories.

Over 70 articles have been published in physics journals by Dr. Michio Kaku. The topics are as varied as his expertise, of which include superstring theory, supergravity, supersymmetry, and hadronic physics. One of the first papers on conformal supergravity and the breakdown of supersymmetry at high temperatures, was also published by Dr. Kaku.

Dr. Kaku's latest book, Parallel Worlds, reveals what today's trailblazing cosmologists know about the nature of the universe, including its age (13.7 billion years), its composition (73 percent "dark energy"), and perhaps even its eventual death. Dr. Kaku also offers a glimpse into the future trillions of years from now, when the survival of intelligent life might well depend upon its ability to migrate to another, more hospitable universe or to travel back to a warmer, safer time.