Reuters: A dike holding back the swollen Red River failed early on Sunday and swamped a school in Fargo, North Dakota, but a backup dike contained the spill as cold weather favored flood fighting and evacuation efforts. No one was injured when the earth dike near the private Oak Grove Lutheran School gave way, and other barriers have held, U.S. Army Corps of Engineers spokesman Frank Worley said. The Corps is overseeing efforts by hundreds of National Guard troops, local residents and …