Morning light shines softly through a large glass window as a travel-weary Michio Kaku gamely musters a smile. Just a few hours removed from a cross-country flight from the East Coast, it doesn't take a rocket scientist to see that this physicist is plain tired. Then the camera starts rolling. In an instant, Kaku looks rejuvenated as he plays to his audience and waxes poetic about his favorite subject -- science.
In the world occupied by nerds and techno geeks, theoretical physicist and futurist Kaku is akin to a rock star. Chalk it up to a flowing mane of pepper-gray locks and the fact he co-created string field theory (which tries to unravel the inner workings of the universe). These days, Kaku can mostly be found teaching at City College of New York where he holds the Henry Semat Chair and Professorship in theoretical physics. When he isn't teaching, Kaku still spends most of his extra time talking science, whether it be through his radio programs, best-selling books such as Physics of the Future or appearances on shows like The Colbert Report, where he recently enlightened Stephen Colbert about the dangers of sending Bruce Willis into space to blow up a deadly asteroid. As fun as it is for Kaku to talk physics, however, he also considers it a matter of survival
