.NATURE IS Curing Americans to all sort of eyeglasses. On April 8th millions experienced a total photo voltaic eclipse. A lot of are going to be much less mesmerized when, in the coming times, trillions of cicadas seem in the nation's Midwest and south-east. The swarm will definitely be actually extraordinarily sizable due to the fact that pair of sorts of the pest-- Brood XIII and Brood XIX-- are arising simultaneously. The final time they appeared at the same time was in 1803, when Thomas Jefferson was head of state. Why do the cicadas possess such an uncommon life process?