The new environmental hero is the capitalist, the entrepreneur. Self-confessed environmental capitalist Carl Hall argues that we need changes on a large scale and the only system that can reliably deliver that is capitalism. A bad conscience or wanting to be "green" will never create scale. People will continue to say they want an environmental solution and then still pick the cheapest goods in the supermarket. We need to turn to self-interest and the invisible hand. Treating environmental questions as something that can be solved by appealing to people s good nature is a red herring. In...