Nancy Mack, of Pullman, submitted this photo of cicadas seen on a recent trip to Evanston, Ill. She said she was “impressed with the amount of cicadas in the trees and dead on the ground. The humming noise sounded more like a pond of frogs, more soothing than disturbing. The insects’ emergence this year represents two waves of hibernating cicadas coming out at once.” Readers can submit photos to photo@dnews.com.