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ScienceDaily (Jan. 26, 2012)  Stop wrangling over global warming and instead reduce fossil-fuel use for the sake of the global economy.


That's the message from two scientists, one from the University of Washington and one from the University of Oxford in the United Kingdom, who say in the current issue of the journal Nature (Jan. 26) that the economic pain of a flattening oil supply will trump the environment as a reason to curb the use of fossil fuels.

"Given our fossil-fuel dependent economies, this is more urgent and has a shorter time frame than global climate change," says James W. Murray, UW professor of oceanography, who wrote the Nature commentary with David King, director of Oxford's Smith School of Enterprise and the Environment.

The "tipping point" for oil supply appears to have occurred around 2005, says Murray, who compared world crude oil production with world prices going back to 1998. Before 2005, supply of regular crude oil was elastic and increased in response to price increases. Since then, production appears to have hit a wall at 75 million barrels per day in spite of price increases of 15 percent each year.

"As a result, prices swing wildly in response to small changes in demand," the co-authors wrote. "Others have remarked on this step change in the economies of oil around the year 2005, but the point needs to be lodged more firmly in the minds of policy makers."

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