St. Louis is experiencing an extraordinary cicada season, with millions of cicadas emerging after completing a 13-year lifecycle. Dr. Kasey Fowler-Finn, an associate professor of biology, notes the rarity of such synchronized life cycles among cicada species worldwide. For the first time since 1803, 13-year and 17-year cicadas will hatch in the same year, she said. Parts of central and eastern Illinois will get both. St. Louis will not. This current emergence will last for about five to seven we