Economists claim carbon cuts won’t break the world’s bank, Nature News, 18 May 2006

Transforming the world’s energy industry to stop the flood of greenhouse gases into the atmosphere might actually bequite cheap.
Figures of tens of trillions of dollars are often cited, and used to question whether measures such as the Kyoto Protocol, which attempts to limit carbon emissions, are too expensive.
But according to a suite of economic models released late last month, the costs of stabilizing carbon dioxide levels could be tiny — equivalent to setting back the growth of global GDP (gross domestic product) by less than 1% over 100 years; global GDP generally grows 2–3% each year. In some cases, the right policies for limiting carbon emissions could even create a surprising win–win situation, leading to the stabilization of greenhouse gases and an increase in global wealth.