Leonard Susskind - How Many Universes Exist?
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14:46
Leonard Susskind - Is the Universe Fine-Tuned for Life and Mind?
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12:00
Alan Guth - How Vast is the Cosmos?
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13:30
Leonard Susskind - Why Black Holes are Astonishing
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14:42
Leonard Susskind: Richard Feynman, mi amigo
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1:13:39
Why is Time a One-Way Street?
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10:29
Is string theory still worth exploring? | Roger Penrose and Eric Weinstein battle Brian Greene
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9:19
Leonard Susskind - Why is Quantum Gravity Key?
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11:13