.NATURE IS ACTUALLY Curing Americans to all kinds of eyeglasses. On April 8th millions saw a complete sunlight eclipse. Several will be much less knocked out when, in the coming days, mountains of cicadas seem in the nation's Midwest and south-east. The throng is going to be actually unusually big due to the fact that 2 forms of the insect-- Brood XIII and also Brood XIX-- are surfacing concurrently. The final opportunity they showed up simultaneously was in 1803, when Thomas Jefferson was actually head of state. Why perform the cicadas have such an unique life process?