John L. Falconer is the Mel and Virginia Clark Professor of Chemical and Biological Engineering and a President's Teaching Scholar at the University of Colorado Boulder. He has published more than 230 papers and has 19 patents in the areas of zeolite membranes, heterogeneous catalysis, photocatalysis, and atomic and molecular deposition. He has also published 11 papers related to education. He has directed the effort at the University of Colorado Boulder to prepare screencasts, ConcepTests, interactive simulations, and course packages for chemical engineering courses.