Lisa Randall, theoretical physicist and leading particle and cosmology expert, separates fact from fiction when it comes to the possible existence of multiple .\r
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String theory is trying to reconcile quantum mechanics and gravity, Randall says. Lisa Randall: Well okay, so first of all what problem is string theory trying to .\r
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Professor Lisa Randall, professor of physics at Harvard University, explains some of her theoretical models on extra-dimensional, warped spacetime to .\r
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Professor Lawrence Krauss and Professor Michio Kaku explain the physics behind the events in the first second of The Big Bang, events which range from the .\r
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