Steven Chu is the William R. Kenan, Jr., Professor of Physics and Molecular & Cellular Physiology at Stanford University. His research spans atomic and polymer physics, biophysics, biology, biomedicine and batteries. He shared the 1997 Nobel Prize in Physics for the laser cooling and trapping of atoms. In 2009, Chu was appointed the U.S. Secretary of Energy, the first scientist to hold a cabinet position since Ben Franklin. During his tenure as secretary, he launched ARPA-E, the Energy Innovation Hubs, the Clean Energy Ministerial meetings and was tasked by President Obama to assist BP in stopping the Deepwater Horizon oil leak. Prior to his cabinet post, Chu was director of the Lawrence Berkeley National Laboratory, a professor of physics and molecular and cell biology at UC-Berkeley, the Theodore and Francis Geballe Professor of Physics and Applied Physics at Stanford, and head of the Quantum Electronics Research Department at AT&T Bell Laboratories.