America’s national pastime is going green in Beantown as the Red Sox step up to the plate to make going to Fenway Park a whole new ball game. Under a five-year partnership with the Natural Resources Defense Council, the nation’s oldest active ballpark may vend beer in corn-starch-based cups, serve local, organic food from concession stands, add solar panels, and even initiate a new tradition: a fifth-inning recycling stretch. Sounds like their bases are covered.