Craig Criddle is a Professor of Civil and Environmental Engineering at Stanford University and Senior Fellow in the Woods Institute for the Environment at Stanford. His specialty is microbial biotechnology for recovery of clean water, renewable energy, and renewable materials. He received his PhD from Stanford and began his academic career in 1989 at Michigan State University. After returning to Stanford in 1998, he has led research teams focused on groundwater bioremediation, biological wastewater treatment and reuse, and bioplastics from organic waste feedstocks. He has many refereed publications and patents and is co-author with award-winning San Francisco cartoonist Larry Gonick of the “Cartoon Guide to Chemistry”, a widely used supplement for high school and first year college chemistry classes. At present, he directs the Codiga Resource Recovery Center at Stanford. The Center’s goals are to accelerate development and adoption of promising resource recovery technologies and to train and inspire a new generation of students for continued innovation.