Joseph S. Francisco is President’s Distinguished Professor in the Department of Earth and Environmental Science and a professor of chemistry at the University of Pennsylvania. He previously served as the dean of the College of Arts and Sciences and Elmer H. and Ruby M. Cordes Chair in chemistry at University of Nebraska in Lincoln. Francisco received his PhD in chemical physics at the Massachusetts Institute of Technology. He was a research fellow at Cambridge University in England and he returned to MIT as a provost postdoctoral fellow. Francisco was a professor of chemistry and earth and atmospheric sciences at Purdue University in 2006 Francisco was appointed as the William E. Moore Distinguished Professor of Earth and Atmospheric Science and Chemistry. Francisco has received multiple awards and was a recipient of a John Simon Guggenheim Fellowship, which he spent at the Jet Propulsion Laboratory at the California Institute of Technology. He was awarded an Alexander von Humboldt US Senior Scientist Award, as well as being appointed a senior visiting fellow at the Institute of Advanced Studies at the University of Bologna, Italy, and a Professeur Invité at the Université de Paris-Est, France. He is a co-author of the textbook Chemical Kinetics and Dynamics (Prentice-Hall) and was president of the American Chemical Society for 2010.