.NATURE IS Attending To Americans to all kinds of spectacles. On April 8th thousands witnessed a total solar energy eclipse. Lots of will certainly be much less knocked out when, in the coming times, trillions of cicadas seem in the country's Midwest and also south-east. The flock will definitely be abnormally huge due to the fact that 2 types of the pest-- Family XIII as well as Brood XIX-- are actually emerging all at once. The final opportunity they appeared simultaneously was in 1803, when Thomas Jefferson was actually president. Why do the cicadas have such an uncommon life cycle?