.TYPE IS ACTUALLY Curing Americans to all type of spectacles. On April 8th millions witnessed a total solar energy eclipse. Many will certainly be much less knocked out when, in the coming days, mountains of cicadas appear in the nation's Midwest and also south-east. The swarm will certainly be actually abnormally sizable due to the fact that 2 forms of the pest-- Brood XIII as well as Brood XIX-- are actually arising simultaneously. The final time they appeared at the same time was in 1803, when Thomas Jefferson was actually president. Why perform the cicadas possess such an unusual life cycle?