Steven Chu
Chu is the youngest of three brothers. His oldest brother, Gilbert Chu, holds an M.D. and a Ph.D., and is a professor of biochemistry and medicine at Stanford University. The middle brother, Steven Chu, was a professor of physics at Stanford and later a professor of physics and molecular and cellular biology at University of California, Berkeley, and the director of Lawrence Berkeley National Laboratory. Steven Chu was awarded the Nobel Prize for Physics in 1997 and was President Obama's Secretary of Energy from January 21, 2009, to April 22, 2013.