After a 17-year, underground incubation period, the Cicadas are coming. The somewhat large, noisy insects will return this summer and swarm in huge numbers in portions of Washtenaw County. WEMU's David Fair checked in with Washtenaw County Conservation District community forester Summer Roberts about the 2021 irruption. There is some good they do for the environment, and there are ways to help mitigate the potential harm they bring to small trees and shrubs.