Michio Kaku is a Japanese American theoretical physicist, futurist, and popularizer of science. He is a professor of physics at the City College of New York and a prominent science communicator, who has written several books and appeared on numerous TV and radio programs. He is known for his work on string field theory, a branch of string theory, and has written several books on the subject as well as on other topics such as the future of science and technology and the possibility of time travel and extraterrestrial life. He has also written several popular science books such as “Physics of the Impossible” and “The Future of the Mind” that explain complex scientific concepts in an accessible way. He is also a frequent speaker on science and technology and their impact on society, and a regular commentator on news programs and documentaries, helping to make science accessible to a wide audience.