This Sunday, 85,000 chilly fans will huddle together in MetLife Stadium in East Rutherford, N.J., to see the Seattle Seahawks take on the Denver Broncos in the National Football League's Super Bowl. Whether you're in the stands or on your couch at home, if you want to spout off a bit of green building trivia in between touchdown drives or during Bruno Mars' half-time show, Skanska USA, the stadium's builder, wants to help out. Courtesy of the firm, here's a snapshot of the stadium's sustainable elements, plus a few other fun facts: