DES MOINES, IOWA (AP) -- Polk County will start enrolling eligible women for a national study on children's health next month. The National Children's Study is the nation's largest long-term study on children's health. It aims to track 100,000 children from before birth to age 21. The Polk County...

"Sex is both complex and dangerous, so why do we and almost all other species do it?" asks John Logsdon, University of Iowa associate professor of biology in the College of Liberal Arts and Sciences. Evolutionary biologists really aren’t sure, but Logsdon plans to tackle the issue in a UI Explorers...