9 pm eastern | 6 pm pacific |Virtually Speaking with Jay Ackroyd | Jay talks with cosmologist Lee Smolin about the nature of time. Best known for devising several different approaches to quantum gravity, in particular loop quantum gravity, Lee  advocates that the two primary approaches to quantum gravity-loop quantum gravity and string theory-can be reconciled as different aspects of the same underlying theory. He offers this video and this PDF related to his work on the reality of time.