2011 P.V. Danckwerts Memorial Lecture: Prof. Frances H. Arnold The Executive Editors of Chemical Engineering Science and the members of the selection committee are pleased to announce the 2011 Danckwerts Lecture will be presented by Prof. Frances H. Arnold. The lecture, entitled “Design by Evolution: Engineering Biology in the 21st Century,” will take place on the 27th of September at 10:30am during the 8th European Congress for Chemical Engineering in Berlin, Germany. The P. V. Danckwerts Lecture was established in 1985 to honor Prof. Peter V. Danckwerts as a leading scholar in the field of chemical engineering, a longstanding Editor of Chemical Engineering Science, the second Shell Professor of Chemical Engineering (University of Cambridge), and the past President of IChemE. The Danckwerts Lecture is co-sponsored by Elsevier; AIChE; IChemE; and EFCE and is presented at the ECCE (odd years) and AIChE (even years) annual meetings. Frances H. Arnold is the Dick and Barbara Dickinson Professor of Chemical Engineering, Biochemistry and Bioengineering at the California Institute of Technology. Her research focuses on protein evolution, in nature and in the laboratory. She pioneered methods of directed enzyme evolution and has used evolutionary approaches to engineer a wide array of novel biocatalysts. Dr. Arnold received a B.S. in mechanical and aerospace engineering from Princeton University in 1979 and a Ph.D. in chemical engineering from the University of California at Berkeley in 1985. Co-inventor on more than 30 issued U.S. patents, she has served as science advisor to 10 companies, including Gevo, Inc., which she co-founded in 2005 to develop new microbial routes to producing fuels and chemicals from renewable resources. Frances Arnold has received numerous awards, including most recently the prestigious Charles Stark Draper Prize of the National Academy of Engineering (2011). She is a member of all three membership organizations of the National Academies—the National Academy of Engineering (2000), the Institute of Medicine (2004), and the National Academy of Sciences (2008). She was elected to the American Academy of Arts and Sciences in 2011. .