.NATURE IS Caring For Americans to all type of eyeglasses. On April 8th thousands watched a complete solar eclipse. Numerous will certainly be actually less knocked out when, in the coming days, trillions of cicadas appear in the nation's Midwest and also south-east. The throng will be actually extraordinarily sizable considering that two types of the bug-- Family XIII as well as Family XIX-- are actually surfacing simultaneously. The last opportunity they showed up at the same time resided in 1803, when Thomas Jefferson was head of state. Why do the cicadas possess such an uncommon life cycle?