Searching: Our Quest for Meaning in the Age of Science - The Big & The Small

Part 2, "The Big & The Small," dramatizes the fact that humans are almost exactly the same distance - in terms of "Powers of Ten" - between an atom and a star. But where do we fit in the moral universe? Alan speaks with the Dalai Lama, a rabbi and a bio-ethicist about the nature of consciousness, and the status of future Artificial Intelligences.

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