Some people love the red-eyed buzzing critters. Others can’t wait for them to go.But for soil ecologists like Dr. Bruce Snyder, these last few weeks are a waning opportunity to learn more about periodical cicadas and the lasting impact they leave behind.The clock is ticking. Soon, millions of cicadas from the Great Southern Brood XIX will go silent. They won’t be back until 2037.“When they’re gone, they’re gone,” said Snyder recently, as he checked multiple wire cages and netted traps...