Saul Griffith: "what, then, is a reasonable and defensible cost estimate for a GND that focuses specifically on solving climate change and decarbonizing the economy? ... the price tag for complete decarbonization is reasonable, and doesn’t rely on a miracle cure. It is doable starting now, and most likely will not cost us money but in fact, save us money. We’ll see it is a capital cost challenge in the short term with a long-term payback as we won’t have to supply expensive fossil fuels to the system in the future."