Energy Secretary Steven Chu spoke of the rich history of Fermilab and the field of high-energy physics in his public lecture at the 44th annual Users’ Meeting on Thursday, June 2. In his lecture, titled “Revving up the great American research and innovation machine,” Chu said the U.S. must continue to invest in science and technology research and development, especially during tough economic times, to remain competitive as a world leader in the energy revolution. Watch a video of his talk. Photo: Reidar Hahn.