The heads of the two global economic institutions convened ministers from 46 countries -- including the United States, China, India and European powers -- on the sidelines of spring meetings in Washington to press the case for urgent climate action.
UN Secretary-General Ban Ki-moon, joining the talks yesterday, said that 2014 was a "critical moment for humanity." He urged policymakers to think of concrete action before a September climate summit he has called in New York.
The Intergovernmental Panel on Climate Change will release tomorrow in Berlin the full version of a 2,000-page report in which it is expected to give a 15-year window for affordable action to limit warming to two degrees Celsius over pre-industrial times -- a level seen as avoiding catastrophic damage in terms of droughts, fires and rising water levels.
While a draft seen by AFP does not give preferences on how to tame climate change, World Bank President Jim Yong Kim and International Monetary Fund Managing Director Christine Lagarde said that economies needed to put a price on carbon -- the most common greenhouse gas blamed for climate change.
"Despite the fact that it's controversial, we've got to tackle the issue of carbon pricing," Kim said.
Lagarde said she was recommending for finance ministers to shift more of the tax burden onto carbon rather than focusing on taxing investments or workers.