Washington Post: Like most Whole Foods shoppers, David Bain thinks he is a decent citizen of Earth. His family buys mostly organic food. They recycle. He recently fortified his green credentials by removing a leaking oil tank in his yard. But here’s a head scratcher: Though the Bains live in Arlington within walking distance of Whole Foods, they often drive there in an SUV that gets just 19 miles per gallon. He has noticed that his SUV is not alone in the lot. Does that make Bain a hypocrite? …