The Bangor Daily News interviewed Rick Kersbergen, a University of Maine Cooperative Extension professor of sustainable dairy and forage systems, for a story on a high school sophomore from Belfast who took a class last fall on how to artificially inseminate a dairy cow. The student, Karagen Stone, works part time at Keeneā€™s Dairy in read more Kersbergen cited in BDN story on teen who learned to artificially inseminate dairy cows