Exploration, for September 18, 2007 - 2:00pm
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Explorations - September 18, 2007Download this clip (mp3, 10.29 megabytes)
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Topic: String theory: a theory of everything?
String theory is perhaps the most powerful, and the most controversial, theory of physics ever proposed.
Guest 1: Brian Greene of Columbia University
Guest 2: Lisa Randall of Harvard University
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