.TYPE IS Attending To Americans to all kinds of eyeglasses. On April 8th thousands saw a total sunlight eclipse. Many will be actually much less knocked out when, in the coming days, mountains of cicadas seem in the nation's Midwest and also south-east. The swarm is going to be actually uncommonly big since 2 types of the pest-- Family XIII and Brood XIX-- are surfacing simultaneously. The last time they appeared at the same time remained in 1803, when Thomas Jefferson was actually president. Why do the cicadas possess such an unique life cycle?