Brian Greene is a professor of physics and mathematics at Columbia University, where he also serves as the director of Columbia’s Center for Theoretical Physics. Greene is recognized for a number of groundbreaking discoveries in his field of superstring theory, including the co-discovery of mirror symmetry and the discovery of spatial topology change. His books—The Elegant Universe, The Fabric of the Cosmos, The Hidden Reality, and Until the End of Time: Mind, Matter, and Our Search for Meaning in an Evolving Universe—have collectively spent over 67 weeks on The New York Times bestseller list, and were the basis of two award-winning NOVA mini-series, which he hosted. In 2008, Greene co-founded the World Science Festival, where he serves as Chairman of the Board. His latest book, Until the End of Time: Mind, Matter, and Our Search for Meaning in an Evolving Universe, was released in 2020.