An article in today's New York Times explored the possible link between chemicals in the environment and rising cancer rates in children. For the past twenty years researchers have noticed a moderate but steady increase in childhood cancers, averaging about one-percent per year. But little is known about what's causing the increase. Much of the cancer research has been conducted at the University of Minnesota. Professor of Pediatrics, Dr. Les Robison, told Minnesota Public Radio's Lorna Benson researchers believe the rising childhood cancer rate is real, and not a function of increased reporting.