According to recent Michigan Department of Natural Resources inventory data, more than 173 million hemlock trees grow in Michigan. An invasive insect is now threatening the tree species. In this week's "Issues of the Environment," WEMU's David Fair talks with Forest Health Monitoring Program Manager, Roger Mech about the Hemlock Woolly Adelgid and what you can do to help protect our trees and forests.
Issues of the Environment: 06/14/17