We have to remember, lefts are the people who created unsustainable national debt, unsustainable health insurance, health care, unsustainable college tuition and debt, unsustainable social welfare programs. Everything the left creates is unsustainable, it can't go on. Everything they create will eventually implode because it can't work as they designed it. Nothing they do is sustainable. That's the great irony. But they claim to know how to sustain life as we know it.