That is because that byproduct has a huge global warming effect. The credits could be sold on international markets, earning tens of millions of dollars a year.If they "quickly figured" it out, then it was obviously always foreseeable, but we're told "the United Nations... established what seemed a sensible system." Why could it "seem" sensible? Only through outrageous negligence or deliberate corruption. Which was it?
That incentive has driven plants in the developing world not only to increase production of the coolant gas but also to keep it high — a huge problem because the coolant itself contributes to global warming and depletes the ozone later.
August 8, 2012
Manufacturers "quickly figured out that they could earn one carbon credit by eliminating one ton of carbon dioxide, but could earn more than 11,000 credits by simply destroying a ton of an obscure waste gas normally released in the manufacturing of a widely used coolant gas."