This week’s worldscienceu Live Session with Brian Greene features harvard professor and breakthrough prize winner, physicist Cumrun Vafa. Join them on on Friday, August 21 at 11am EDT for a live conversation with audience Q+A for a discussion of the past, present, and future of string theory and Professor Vafa’s latest book, Puzzles to Unravel the Universe. Click the link in the bio to join the conversation. #worldsciu