Dr. Steven Chu is the United States Secretary of Energy. A distinguished scientist, he received the 1977 Nobel Prize in Physics for his research on the cooling and trapping of atoms with laser light. Prior to his appointment by President Barack Obama in 2009, he was professor of physics, and of molecular and cell biology at the University of California, Berkeley, and Director of the Lawrence Berkeley National Laboratory. His recent research has been concerned with the study of biological systems at the single molecule level. Born in St. Louis, Missouri to a family with a history of...