.STRUCTURE IS ACTUALLY Curing Americans to all kinds of spectacles. On April 8th thousands saw an overall sun eclipse. Numerous will be actually much less magnetized when, in the coming times, trillions of cicadas seem in the nation's Midwest and also south-east. The swarm is going to be abnormally big since pair of forms of the insect-- Family XIII and Family XIX-- are surfacing all at once. The final opportunity they appeared simultaneously remained in 1803, when Thomas Jefferson was head of state. Why carry out the cicadas have such an unusual life process?