.NATURE IS ACTUALLY TREATING Americans to all type of spectacles. On April 8th millions witnessed an overall photo voltaic eclipse. Several are going to be actually much less mesmerized when, in the coming days, trillions of cicadas seem in the country's Midwest as well as south-east. The swarm is going to be actually extraordinarily huge because 2 forms of the bug-- Family XIII as well as Brood XIX-- are actually arising concurrently. The final time they seemed at the same time was in 1803, when Thomas Jefferson was actually president. Why do the cicadas possess such an unique life process?