Cicadas are a part of summer many people might like to forget. But, scientists from several US universities say a brood of periodical cicadas is set to emerge from underground for the first time in 17 years. It’s known as Brood X, or the “Big Brood.”

Americans can likely expect to see swarms across 15 states, including Illinois, as the ground temperature warms.  Dr. Michael Raupp told Fox News , “[…] They’re going to emerge in massive numbers. And, when I say massive, I mean massive. There are going to be as many as 1.5 million cicadas per acre.”