Copenhagen Global Warming

The conventional view in policy circles is that climate change will cost the U.S. somewhere between 0 and 2 percent of GDP by the year 2100. But a more thorough accounting points to a much heavier price.

Officials in Copenhagen will probably ink a new agreement calling for reductions in global CO2 emissions. But even if the delegates achieve this outcome, it is likely that there will be little to cheer.

As the global architects of a new treaty to combat climate change meet in Copenhagen, they continue to work from a conspicuously incomplete blueprint. It's not too late to draft a new blueprint.

The United Nations Climate Change Conference in Copenhagen is a moment that challenges us and history. The global warming crisis requires robust, concerted and conscientious responses from all governments.