1. Department of Natural Sciences, Mercy College, Dobbs Ferry, New York
2. Chemistry at Benedictine University, Lisle, Illinois
3. Institute for Environmental Studies at Western Illinois University, Macomb, Illinois, and a Program Director within the Division of Environmental Biology, National Science Foundation, Alexandria, Virginia
4. Division of Biology, Kansas State University, Manhattan, Kansas
5. Jennifer A. Rudgers is a professor in the Department of Biology at the University of New Mexico, in Albuquerque, New Mexico. Figures 2 and 3 were created by Daisy Chung (copyright, daisychung.com)