UPPER WEST SIDE, Manhattan — A 17-year-old boy was stabbed to death outside a pizzeria on the Upper West Side on Thursday afternoon, police said. Officers spotted the teen as he was being attacked by two men in their 20s at the corner of West 100th Street and Broadway just before 1:30 p.m., an NYPD spokesman said. They chased the men and took them into custody several blocks away when they tried to get into  an unmarked vehicle. Emergency services rushed the teen, who’d […]