Boston BelowEvery day, roughly 720,000 people from all walks of life use the four lines of the Boston MBTA subway system: Red, Green, Blue, and Orange. The T, as it's known, is a vital link to living, working, or visiting in Boston. The subway system acts as the city's arteries. It includes 28 underground and 80 above ground stations. Over 145 compelling art photographs explore the T riders, their behavior, their actions when waiting for or riding a train, and