Dr. John P. Holdren, the President’s Science Advisor and Co-Chair of the President’s Council of Advisors on Science and Technology (PCAST) speaks at the USAID conference entitled Transforming Development Through Science, Technology and Innovation. USAID has gathered many of the world’s leading scientists and development thinkers, along with leaders of key federal science agencies to help map out a bold new Science, Technology and Innovation strategy for USAID.