America’s second-largest cicada swarm is about to emerge across the East Coast

America’s second-largest cicada swarm is about to emerge across the East Coast

This brood of cicadas represents 'unique' phenomenon, experts say

Two types of cicadas commonly exist in the Eastern United States: annual cicadas and periodical cicadas. (iStock)

Because of the way broods emerge in different areas, places that had cicadas last year may not have them this year. (iStock)

Cicada emergences typically last about a month, according to an expert. (iStock)