.STRUCTURE IS Caring For Americans to all sort of eyeglasses. On April 8th thousands witnessed a total photovoltaic eclipse. A lot of will be much less magnetized when, in the coming times, trillions of cicadas show up in the nation's Midwest and also south-east. The flock will certainly be uncommonly huge since pair of sorts of the pest-- Family XIII and Brood XIX-- are developing simultaneously. The final time they seemed together remained in 1803, when Thomas Jefferson was actually president. Why do the cicadas possess such an unusual life process?