.NATURE IS Attending To Americans to all sort of spectacles. On April 8th thousands experienced a complete sun eclipse. Lots of will be less magnetized when, in the coming times, trillions of cicadas seem in the country's Midwest and south-east. The flock will certainly be actually uncommonly big given that two forms of the bug-- Family XIII and also Family XIX-- are actually emerging simultaneously. The last opportunity they seemed at the same time was in 1803, when Thomas Jefferson was head of state. Why carry out the cicadas possess such an unusual life cycle?