he air is humid, stagnant and reeks of beer. Ping-pong balls zip back and forth across 9-by-5 sheets of solid wood straddled across garbage cans. A typical Friday night at Dartmouth College is well underway. Beer Pong is the main staple of Dartmouth’s Greek-dominated social scene. An article about the perils of drinking games labeled Dartmouth the official founder of beer pong…