David W Onstad (Edited By) David Onstad received his Ph.D. at Cornell University in 1985. He was a professor at the University of Illinois until 2011 when he joined DuPont Pioneer. His expertise includes economic entomology, systems analysis, ecology, and pest management. The second edition of his book on insect resistance management was published in 2014.Philip Crain (Edited By) Philip Crain received his Ph.D. in Entomology from the University of Kentucky studying novel mosquito control strategies. After a post-doctoral research position at Westfälische-Wilhelms Universität in Münster, Germany, he joined the insect resistance management research team at DuPont Pioneer. Philip has a strong ecological background, and promotes the use of computer models to understand complex interactions. Population genetics and population dynamics models should include economic analysis if the goal is control of pests or disease.