Drs. Brian Greene of Columbia and Lisa Randall of Harvard discuss physics, cosmology, and Einstein.
Brian Randolph Greene is an American theoretical physicist and string theorist. He has been a professor at Columbia University since 1996 and chairman of the World Science Festival since co-founding it in 2008.
Lisa Randall is an American theoretical physicist and leading expert on particle physics and cosmology. She is the Frank B. Baird, Jr. Professor of Science on the physics faculty of Harvard University.