From the classroom to the lab to the White House, Chu has addressed the enormity of climate change through the tireless pursuit of renewable and sustainable energy sources. Awarded the Nobel Prize in Physics for developing laser techniques to cool and trap atoms and molecules, Chu is now the U.S. secretary of energy. He is charged with implementing President Obama’s ambitious agenda to invest in clean energy, reduce our dependence on foreign oil, and create new jobs. The Cal Alumni Association named Chu its 2011 Alumnus of the Year. Follow him on Facebook.