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17-Year Swarm

Periodical Cicada, posing on an old tuliptree flower stalk.( Credit: Katja Schulz, CC BY 2.0 DEED )

May 21, 2024

Chicago Braces for 1.5 Million Cicadas Per Acre in Historic 17-Year Swarm Invasion

Millions of cicadas, which emerge every 17 years, are expected to appear in the region with their unique and very loud chirping sound. These cicadas are expected to appear in only a