.NATURE IS Attending To Americans to all type of spectacles. On April 8th millions saw an overall photovoltaic eclipse. Lots of will definitely be much less magnetized when, in the coming days, mountains of cicadas seem in the nation's Midwest and also south-east. The swarm will definitely be uncommonly big due to the fact that pair of forms of the pest-- Family XIII and also Brood XIX-- are actually developing simultaneously. The final opportunity they appeared simultaneously was in 1803, when Thomas Jefferson was actually president. Why perform the cicadas have such an unusual life process?