From an email I recieved:
The annual Sheffrin Lecture in Public Policy (an annual Division of Social Sciences Event) will take place this Thursday, April 17th, 5:30 pm in the Alumni Center (AGR Room) and will feature Professor Sendhil Mullainathan from Harvard, talking about his recent book, Scarcity (co-authored with Princeton Psychologist Eldar Shafir).
Some more detail is below:

