.TYPE IS Curing Americans to all sort of eyeglasses. On April 8th millions saw an overall solar eclipse. Many are going to be actually less charmed when, in the coming times, mountains of cicadas seem in the nation's Midwest and south-east. The throng is going to be actually abnormally big given that 2 kinds of the bug-- Family XIII and also Brood XIX-- are arising at the same time. The final time they appeared together was in 1803, when Thomas Jefferson was actually president. Why carry out the cicadas have such an unusual life process?