Stabilizing concentrations of greenhouse gases in the atmosphere requires fundamental change in the energy system.

·        Energy is central to the climate change issue. Carbon dioxide emissions from the production and consumption of fossil fuels are the largest contributor to human emissions of greenhouse gases. Fossil fuel resources are abundant, and, if used in conjunction with present energy technology, have the potential to increase the concentrations of greenhouse gases in the atmosphere substantially. [TW1]

·        If present trends continue, carbon dioxide emissions from energy will continue to grow. The influences of future population growth and economic development on the demand for energy services are likely to exceed currently projected improvements in energy intensity and the ongoing transition to less carbon-intensive fuels. However, trends are not destiny—a global technology strategy could help change the present course. 

·         In order to stabilize concentrations of greenhouse gases in the atmosphere, global carbon emissions must peak during the 21st century and then decline indefinitely. This can occur only if lower carbon-emitting technologies are deployed worldwide.

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 [TW1]I changed this one back closer to the original. The point that they are abundant is important on its own, not just as a determinant of price. The discussion in the body of the report suggests that coal is abundant enough to continue to be used for centuries.