Slideshow: Down on the farm, Katers class visits electrifying cows

In Professor John Katers’ Pollution Control class, a trip to Wisconsin’s largest family-owned dairy, Pagel’s Ponderosa in Kewaunee County, provided a true 360° learning opportunity. The farm with approximately 4,700 cows uses a sophisticated, engineered system that collects manure and feeds it to an anaerobic biodigester producing methane gas to drive a generator that sends electricity out to the grid. See the feature story and photos.