Ross and Burbank

Lisa Randall

Originally aired: Wednesday, October 12, 2011
Category: Interviews
What's the difference between dark matter and dark energy? Will scientists 500 years from now look back on our current scientific knowledge and snicker? These and other important scientific questions are answered by Harvard physicist Lisa Randall, whose new book is "Knocking on Heaven's Door: How Physics and Scientific Thinking Illuminate the Universe and the Modern World."

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