Presentation by Steven Chu, Tsinghua University, July 15 2009 Steven Chu(朱棣文,PhD( born February28,1948) is an american physicist and currently the 12th United States Secretary of Energy As a scientist, Chu is known for his research in cooling and trapping ofatoms with laser light, which won him the Nobel prize in physics in 1997 At the time of his appointment as Energy Secretary, he was a professor of physics and molecular and cellular biology at the University of california, Berkeley and the director of the Lawrence Berkeley National Laboratory where his research was concerned primarily with the study of biological systems at the single molecule level He is a vocal advocate for more research into alternative energy and nuclear power, arguing that a shift away from fossil fuels is essential to combat global warming• Steven Chu (朱棣文), Ph.D (born February 28, 1948), is an American physicist and currently the 12th United States Secretary of Energy. • As a scientist, Chu is known for his research in cooling and trapping of atoms with laser light, which won him the Nobel Prize in Physics in 1997. • At the time of his appointment as Energy Secretary, he was a professor of physics and molecular and cellular biology at the University of California, Berkeley and the director of the Lawrence Berkeley National Laboratory, where his research was concerned primarily with the study of biological systems at the single molecule level. • He is a vocal advocate for more research into alternative energy and nuclear power, arguing that a shift away from fossil fuels is essential to combat global warming. Presentation by Steven Chu, Tsinghua University, July 15 2009