Rare Cicada Emergence Explained

This year billions of cicadas will emerge as the annual varieties are joined by the periodic Brood XIX and Brood XIII species that pop up every 13 and 17 years. The periodical brood emergence coincides every 221 years. The last time this occurred, Thomas Jefferson was the President of the United States. Dr. Allen Moore, division director for the Division of Environmental Biology at the U.S. National Science Foundation, joins to discuss cicadas and answer some questions about these mysterious insects.
00:00 Periodical Cicadas
00:28 Where do Cicadas Live?
00:56 When do Cicadas Emerge?
01:16 Why 13 and 17 years?
01:48 Why do they come out all at once?
02:35 What are Cicadas Doing?
03:13 How long are cicadas out?
03:25 Cicada Sound
04:26 Excitement over cicadas

[@luisv8887]

great and comprehensive explanation, thanks!

[@georgeflitzer7160]

I love listening to them!!❤

[@matthewmosher7676]

Are the 13 year brood and the 17 year brood the same species? If so, Are the broods laid by the same mother such that some environmental factors program the individual to become part of one brood 13 or the other 17?

[@Jimbo_McBacon]

Somehow they are finding a way into my house. Sneaky and weird! Love em.🪰