This week, Jillian has a lot of questions for theoretical physicist and mathematician Brian Greene:l Is the universe infinite? What is the most probable multiverse? Are there copies of us out there? What about the Fermi Paradox, are we alone? They tackle some of Jillian's other favorite topics as well, including parallel universes, The Double Slit Experiment, Quantum Mechanics, the nature of time, free will, alternate realities, black holes and so much more… 

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