At the intersection of global energy depletion and concerns about human impact on the environment lie some serious and oft overlooked issues. Largely gone from our public discourse is the idea that oil is infinite. It is now accepted, even to previous staunch cornucopians, that increasing, or even maintaining oil production will come only at higher costs. The new response to the energy/environmental crisis is to transition to a green economy, replacing our declining stocks of fossil sunlight with new technologies able to harness our current sunlight in its various forms. That these renewable technologies are available, viable and becoming more popular is not in question – however, whether these low carbon strategies can combine with now more expensive fossil fuels to maintain a growth trajectory for both the developed and developing worlds is another question entirely.