Professor Nima Arkani-Hamed of the Institute for Advanced Study in Princeton, NJ, whose Messenger Lectures on our understandig of the universe at the most fundamental level were featured at this recent blog, talks briefly about the most important developments of the past couple of decades in that field and future direction of inquiry. (The portrait behind him is that of the late Pakistani Nobel laureate Abdus Salam, who was a co-developer of the Standard Model of particle physics, so the location is probably the Abdus Salam ICTP in Trieste, Italy.)
