Why 2024's cicada bonanza is so rare
Periodical cicadas have a very strange lifecycle. They spend 13 or 17 years underground (depending on the brood), and then suddenly emerge in their billions over the course of a few weeks. But this ultra rare dual emergence of two different broods has not happened for 221 years - and won't happen again for another 221 years.
Cicada expert Dr Gene Kritsky explains all about it.
Produced by Tom Heyden and Natalia Guerrero
