HANOVER, N.H. — Josh Bean had two short touchdown runs, the Columbia defence had two goal-line stands in the last three minutes and the Lions held on to defeat Dartmouth 22-17 on Saturday to match their best start in 21 years. Following Bean’s second score, the Lions (6-0, 3-0 Ivy League) led 22-7 entering the fourth quarter in the 11th meeting in conference history between undefeated teams with at least five games played. They were in position to put the game away before Bun Straton’s end zone interception on the Lions’ next possession. Dartmouth (5-1, 2-1) followed with an 80-yard...