Why Do Cicadas Only Come Out Every 17 Years?

In 2021, North America braced for the arrival of the Brood X or Brood 10 swarm of cicadas. This brood, which is actually a combination of three different cicada species, led to many curious questions about these large, buzzing bugs. Do they really swarm out of the ground? Why do they only arrive every 17 … Continue reading Why Do Cicadas Only Come Out Every 17 Years?