Rylee Williams holds a fish she caught July 25 in Lester Park as she and members of her KEY Zone summer group learned about animals living in local streams. Members of the watershed and pollutant program of the Minnesota Pollution Control Agency in Duluth helped children gather insects, identify them under a microscope and chart their findings. They also scooped up fish to identify and measure. “I love being out there and having some of the kids really get into using the microscope and graphing their findings," MPCA environmental specialist Jenny Jasperson said. "It’s good for them to see that not all science is in a book."