William H. Green is a world leader in chemical kinetics and reaction engineering, and in development of related software. He has led many combined experimental/modeling research projects related to fuels, combustion, pyrolysis, and oxidative stability, and he invented an instrument to directly measure rate coefficients for multi-channel reactions. He developed computer methods to predict the behavior of complicated reacting mixtures, many of which are included in the Reaction Mechanism Generator software package. Recently his group has developed machine- learning methods for accurately predicting the products of organic reactions and many chemical properties, incorporated in the ASKCOS and Chemprop software packages. He also invents and analyzes technologies to reduce greenhouse gas emissions, particularly in the transportation/fuel sector. Two of his greenhouse-gas reduction inventions are now being commercialized, one by Thiozen, a company he co-founded. Prof. Green earned his B.A. from Swarthmore College, and his Ph.D. from Univ of California Berkeley. After postdocs at Cambridge University and the University of Pennsylvania, he worked for Exxon for 6 years before joining the Chemical Engineering faculty at MIT in 1997. He has co-authored more than 340 journal articles, which have been cited more than 21,000 times. He is a Fellow of the AAAS and of the Combustion Institute, and has received the ACS Glenn Award in Fuel Chemistry and AIChE’s Wilhelm Award in Reaction Engineering. He previously served as the Editor of the International Journal of Chemical Kinetics, as the faculty chair of MIT’s Mobility of the Future project, and as the Executive Officer of the MIT Department of Chemical Engineering.