Search for Missing Iowa Woman Mollie Tibbetts Expands to Cornfields

The desperate search for a missing Iowa college student is focused on a vast expanse of dense cornfields. It's a nightmare facing law enforcement as they look for the sophomore who vanished after going jogging last week. Mollie Tibbetts, 20, is a psychology major at the University of Iowa. She was last seen jogging on Wednesday in the small town of Brooklyn, Iowa. Investigators have been combing through cornfields but they are incredibly thick.