Denise Chow is a reporter for NBC News Science focused on general science and climate change.
Tens of billions of noisy cicadas are set to pop out of the ground in the coming weeks in a rare synchronized event that last occurred 221 years ago. The winged insects are expected to appear across the Midwest and Southeast starting early May, in a double emergence of two different broods of periodical cicadas. These bugs spend a fixed number of years underground before coming to the surface to take part in a raucous mating ritual.
Thousands of cicada species can be found around the world, but periodical cicadas are distinct because they spend most of their lives underground, feeding on tree roots. After either 13 or 17 years, depending on the brood, the insects tunnel to the surface to begin a frenzied, monthlong search for a mate. Louderman said he hasn’t seen any reports yet of early cicada sightings. The insects usually pop up from underground once soil temperatures reach around 64 degrees Fahrenheit.
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Billions of cicadas are set to appear in a rare 'double brood emergence,' scientists sayBillions of cicadas are expected to surface this spring as two different broods - one that appears every 13 years, and another every 17 years - emerge simultaneously.
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Billions of cicadas are set to appear in a rare 'double brood emergence,' scientists sayBillions of cicadas are expected to surface this spring as two different broods - one that appears every 13 years, and another every 17 years - emerge simultaneously.
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Billions of cicadas are set to appear in a rare 'double brood emergence,' scientists sayBillions of cicadas are expected to surface this spring as two different broods - one that appears every 13 years, and another every 17 years - emerge simultaneously.
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Billions of cicadas are about to emerge, creating a once-in-a-lifetime spectacleTwo large broods of cicadas in the Midwest and southeastern U.S. are set to surface simultaneously—something that hasn't happened in over 200 years.
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Billions of cicadas will buzz this spring as two broods emerge at the same timeBillions of cicadas will emerge this spring across eastern and southern states as two broods arrive simultaneously for the first time in more than 200 years.
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Map shows where billions of cicadas will soon emerge in the USIt is a rare event for cicadas with a 13-year life cycle and a 17-year life cycle to reach adulthood at the same time.
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