“One of the least meaningful and most overused words in the English language is 'sustainability.' For most Americans, it means something like 'pretty much the way I live right now, though maybe with a different car.' A good test of any activity or product described as sustainable is to multiply it by 300 million (the approximate current population of the United States) and then by 9 or 10 billion (the expected population of the world by midcentury) and see if it still seems green. This is not an easy test to pass”