.NATURE IS ACTUALLY Caring For Americans to all kinds of eyeglasses. On April 8th millions witnessed a complete sun eclipse. Several will certainly be less magnetized when, in the coming times, trillions of cicadas seem in the nation's Midwest as well as south-east. The flock will certainly be actually abnormally sizable given that pair of sorts of the pest-- Brood XIII and also Brood XIX-- are actually surfacing at the same time. The last opportunity they seemed all at once was in 1803, when Thomas Jefferson was actually president. Why carry out the cicadas have such an unusual life cycle?