The OnceEvery17Years Cicada Swarm, Named "Brood X" Is Coming This Summer Because Of Course It Is Dante 630 PM 27 NBC News In a few weeks, a natural spectacle will take place across much of the United States — one that is not found anywhere else in the world Billions of cicadas that have spent years patiently growing in The "periodical" cicada waits underground as a nymph for almost its entire 17year life cycle, making the journey to the surface when the soil reaches a Nature's 17year alarm clock has gone off for the Cape's cicadas, bugs the size of an adult's big toe that will create a racket all day long for the next month or so
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