Nowadays, in an age of rising population and scarcities of food and water in some regions, it's a wonder that humanitarians aren't clamoring for more atmospheric carbon dioxide.
At which point we do really have to wonder if these are the right people to lead us into the sunlit uplands of a radically reformed food derivatives market.
It is no wonder then, that stricken farmers turn apoplectic when they visit the supermarket and discover that shop prices for the food they produce seem to be as high as ever.