(AP) — In this Sept. 21, 2011, file photo Mike Larson rubs the nose of one of his 2,900 dairy cows at Larson Acres Inc. in the Town of Magnolia, Wis.
Wisconsin’s Supreme Court ruled in a closely watched case that pitted Larson Acres Inc. against a small town that blamed its water-pollution problems on manure generated by Larson’s 2,900 cows. The case was the first to test a 2004 state law governing the expansion of livestock farm operations. (AP Photo/Dinesh Ramde, File)