Philip Duffy is a Senior Policy Analyst at the White House Office of Science and Technology Policy, where he handles a range of issues related to climate change. He is also a Senior Scientist at Lawrence Livermore National Laboratory, where he began working in 1986, initially in the weapons program and since 1990 in climate research. At LLNL he has had many roles, including physicist, Group Leader, and Deputy Division Leader. Between 2008 and 2011 he was Senior Scientist, Principal Scientist, and Chief Scientist at Climate Central, a non-profit dedicated to increasing public understanding and awareness of climate change. Dr. Duffy has held academic posts at Stanford University, the University of California at Merced, and at the Carnegie Institution for Science. In 2003 he became the founding director of a University of California system-wide institute for collaborative research into the societal impacts of climate change. Dr. Duffy's areas of expertise include mathematical modeling of climate, downscaling of climate projections, quantifying uncertainty in projections of future climate, and understanding societal impacts of climate change. He has over 60 peer-reviewed publications in climate science, atomic physics, and astrophysics. Dr. Duffy has contributed to the IPCC in several roles, and in 2008 he won the LLNL Science and Technology Award and the United Nations Association Global Citizen Award. Dr. Duffy has a bachelor's degree in astronomy and astrophysics from Harvard and a PhD degree in applied physics from Stanford University.