Michael Green is a common name that can refer to various individuals across different fields. One notable Michael Green is a theoretical physicist known for his work in string theory, which seeks to explain the fundamental nature of particles and forces in the universe. He has contributed significantly to the understanding of quantum gravity and superstring theory. Another Michael Green is a prominent figure in the world of business, particularly in the technology sector. He has held leadership positions in several companies, focusing on innovation and strategic development. His expertise has helped shape the direction of various startups and established firms alike.