Long-distance relationships are bad for the environment. Of course, why stop with relationships? So are cross-country or international friendships requiring visits, or academic conferences conducted in person. So is relying on tourism instead of five-inch Internet videos of scenic vistas. If we judge matters entirely by an environmental metric, it would be reasonable to move most liberal arts and social-science Ph.D. students (not to mention their professors) out of school and into Khmer Rouge-style forestry camps planting trees. (Separately, "eating local" isn't
even necessarily better for the environment.)