RIVERWOODS, Ill. (AP) — The ground had seemed to undulate at night, alive with bugs. Crawling cicada nymphs, striving to get higher after 17 years underground, marched en masse toward and up trees, pausing to shed their skin and emerge as adults. And then the fun began.

Cicada chaos is flourishing and flying. Trillions of once-hidden baby bugs are in the air, on the trees and perching upon people’s shirts, hats and even faces. They’re red-eyed, loud and frisky.

“What you saw was biblical,” said biologist Gene Kritsky, who has been chasing periodical cicadas for 50 years, yet was still amazed by the 3 to 5 million cicadas crowding a small patch of Ryerson Conservation Area north of Chicago. “There are things I’ve seen this time that I’ve never seen before.”

Click here to continue reading…