Eero Saarinen’s 1962 masterpiece TWA Terminal at JFK airport is a classic. It’s now being used by JetBlue, which in only a few years has become the airport’s biggest carrier. So now the airline is expanding. “JetBlue’s new terminal, unfortunately, shows just how low air travel can go. At $875 million, it’s $125 million cheaper than the bare-bones JFK barracks that American Airlines opened last summer — and looks it.”