Скачать с ютуб Why 2024's cicada emergence is so rare | BBC Global в хорошем качестве

Why 2024's cicada emergence is so rare | BBC Global

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. And now, in 2024, an ultra rare "dual emergence" of cicadas is happening – with two different broods of emerging at the same time. It has not happened for 221 years – and won't happen again for another 221 years. Cicada expert Dr Gene Kritsky explains it all. Subscribe to BBC Global: https://www.youtube.com/c/bbc_global?... For the latest news, analysis and features visit: www.bbc.com #bbc #cicadas #nature