A recent New York Times headline about sustainability asked this question: "What Does Tomorrow Owe Today?" The article continued in a more provocative devil's advocate tone to ask "What have future generations done for us?" It's an age-old ethical question: Do we take care of the Earth for future inhabitants because it's the right thing to do? It's also an economical debate: Do we spend the hard-earned dollars in our own pocket trying to make Earth "better" — whatever that means — for future generations? And if we do, is this a worthwhile investment? And like I always do, I
