There is a global market in carbon offsets. In Europe, California and many other places in the world, a business wanting to increase the amount of CO2 it will produce must buy a permit. The permit is issued by other businesses that will reduce their CO2 by the amount of the permit.
After the abysmal failure of Copenhagen where China and India joined hands to refuse any restraint on carbon emissions and President Obama signed on with them, the price of carbon permits fell. From December 8th when carbon permits were selling for $43 per permit to last week when the price was $17. Less than half price in one month.
The world of people in the global-warming-CO2 control business have voted: Copenhagen was the end of the global warming hysteria. Even real global warming, if it ever happens again, couldn't get nations to take the issue seriously.