Dr. Nick Haddad is Senior Terrestrial Ecologist in the Department of Integrative Biology at Michigan State University and Kellogg Biological Station. For more than 20 years, he has been studying how plants and animals use corridors. He has worked in the largest and longest-running corridor experiment, the Savannah River Site Corridor Project, and he has studied natural corridors used by rare butterflies. His latest book, The Last Butterflies, will be available in June 2019.