Kaku Michio is a prominent theoretical physicist known for his work in string theory and his efforts to popularize science. He was born on January 24, 1947, in San Jose, California. Kaku has authored several books, including Hyperspace and The Future of Humanity, which explore complex scientific concepts in an accessible manner. In addition to his research, Kaku is a co-founder of the string field theory, which aims to unify the fundamental forces of nature. He is also a well-known science communicator, frequently appearing on television and radio programs to discuss topics related to physics and the future of technology.