Dr. Michio Kaku is a theoretical physicist, a bestselling author, and the cofounder of string field theory (a branch of string theory), which is a continuation of Einstein’s search to unite the four fundamental forces of nature into one unified theory.

Kaku has authored many popular books about physics, including Parallel Worlds (2006), Einstein’s Cosmos (2005), Hyperspace (1995) and his most recent New York Times bestseller, Physics of the Impossible: A Scientific Exploration of the World of Phasers, Force Fields, Teleportation, and Time Travel. He has also appeared on television (Discovery, BBC, ABC, Science Channel, and CNN, to name a few), written for popular science publications like Discover, Wired, and New Scientist, and has been featured in documentaries like Me & Isaac Newton and a recent BBC series on the nature of time.

Kaku received a BS (summa cum laude) from Harvard University in 1968 and a PhD from the University of California, Berkeley in 1972. He currently holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York, where he has taught for over twenty-five years. He has also been a visiting professor at the Institute for Advanced Study at Princeton, as well as at New York University (NYU). He is the author of several scholarly textbooks and has had more than seventy articles published in physics journals, covering topics such as superstring theory, supergravity, supersymmetry, and hadronic physics.