How Did the Universe Become 'Just Right'?

Why did our universe develop in such a way that we can exist? Was it by accident or by design? And is that a question science can answer? Writer, physicist and cosmologist Paul Davies discusses his theories on how the universe came to be such a perfect environment for life.

Davies is the author of Cosmic Jackpot: Why Our Universe is Just Right for Life; director of Beyond Center for Fundamental Concepts in Science; and a professor at Arizona State University.

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