After penning the End of Oil, I was bothered by my switch of camp. In some sense I had become a new kind of neo-Malthus but yet I resist the analogy. I think the struggle we have today with carbon emissions is different from the issue of resource conservation like in the case of land or other commodities. And the reason has to do with the market system and price signals.
In the past when we are thinking about resource constraints such as agricultural land, we know there is a price on the resource. With subsidies they get over-utilised but overall, because the market system rewards greater productivity of those resources, all the micro-decisions in the economy will encourage discovery of more of the resources or greater efficiencies in utilisation. The economics is working against Malthusian ideas.
Nevertheless, with the carbon emission challenge of today, most emissions still remain unpriced. They rightfully require a negative price but tax systems and enforcement aside, governments around the world are reluctant to even design regulations to create proper carbon pricing. Without this pricing, economics will keep working against the climate change problem, and we can only rely on goodwill or sustainability marketing as motivation which will never be enough.