Updated

U.N. experts are warning that the level of global warming gases is rising rapidly, and delaying action will reduce options for dealing with the worst impacts of climate change.

The findings were in the final draft of a report by the Intergovernmental Panel on Climate Change, the U.N.-sponsored body that provides the scientific basis for climate negotiations.

The report, obtained Thursday by The Associated Press, says that global warming will continue to increase unless countries shift quickly to clean energy and cut emissions.

Is said that despite national policies and international efforts aimed at mitigating climate change, emissions of CO2 and other greenhouse gases that are warming the planet grew 2.2 percent per year on average between 2000 and 2010, compared to 1.3 percent per year from 1970 to 2000.