Michio Kaku - a podcast by Barnes & Noble

Human colonies on Mars, laser beams shooting digital copies of ourselves into space, and freezing your age at thirty: does it sound like fantasy?  Not at all, says the physicist and author Dr. Michio Kaku. The co-founder of string field theory joins Jim Mustich in the studio, to talk about his new book The Future of Humanity, why he's an optimist about the world of tomorrow, and what you should do if you're abducted by an alien.

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