Oct 6 Environment In-Depth: National Children's Study Comes to Jefferson Co. The University of Louisville is the latest institution to be chosen to help with a major national study of the effects of the environment on children’s health. As WFPL’s Kristin Espeland reports, the National Children’s Study breaks new ground in its scope and breadth. By Kristin Espeland Oct 6 Environment In-Depth: National Children's Study Comes to Jefferson Co. Kristin Espeland