Brace yourselves for a noisy, once-in-a-lifetime experience in Iowa

This spring those in the southeastern part of the state will be able to witness a once-in-a-lifetime event of two broods of periodical cicadas emerging at once -- something that hasn't happened since Thomas Jefferson was president. Insect Diagnostician Zach Schumm at ISU explains what periodical cicadas are and why they're so special.