Are you a company or government with more hard cash than long-term vision? Would you be willing to pay third-world countries for their excess carbon credits (because the harsh debt payments - that they're making to you, incidentally - stops them from building a sustainable industry) so you can continue pumping your waste into the atmosphere? lets you bid for, trade and bank planet-destroying gases. And they said the free market could never be used for a worthy purpose.

At BBC News: Pollution trading goes online.