Jeff Speck is a city planner and urban designer who, through writing, public service, and built work, advocates internationally for smart growth and sustainable design. The Christian Science Monitor called his recent book, Walkable City: How Downtown Can Save America, One Step at a Time, "timely and important, a delightful, insightful, irreverent work."

In the spirit of ideas worth spreading, TEDx is a program of local, selforganized events that bring people together to share a TEDlike experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, selforganized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are selforganized.* (*Subject to certain rules and regulations)