If you’ve been outside in the early evening over the last few weeks, you’ve probably had to yell at the folks you’re hanging out with. Not because you’re angry, but because the cicadas are so darn loud! Aren’t they only supposed to come out every 17 years? What exactly is going on? We get answers from Allen Lawrance, the Invertebrate Specialist at the Peggy Notebaert Nature Museum.
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