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In NOVA's latest four-part series, physicist Brian Greene covers an astonishing swath of material in the world of physics: quantum mechanics, general relativity, light speed and gravity and the search for elusive subatomic particles. The series is based on his book, "Fabric of the Cosmos."
This week, Hari caught up with Greene to discuss the first installment of the series, "What is Space?" In the series, Greene describes space as a fabric, which can twist, bend and warp in response to gravity. They talk here about dark energy, black holes, our expanding universe and the seemingly wacky idea held that our three-dimensional reality may actually be a sort of two-dimensional quantum illusion.
