What happens when highways and urban development fragment natural habitat? How do these changes affect the migration, range expansion, and mating habits of wildlife? It’s estimated that roughly one in five animal and plant species in the U.S. are at risk of extinction due to habitat loss and fragmentation. Could wildlife corridors be the answer? Dr. Paul Beier, a Regents’ Professor of Conservation Biology at NAU, specializes in science-based design of wildlife corridors for conserving these passages and explains how regional maps of wildlife corridors have helped raise awareness of wildlife crossings, including projects like the Catalina-Tortolita corridor, which provides habitat linkage for thousands of animals near Tucson.