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Oklahoma Senator James Inhofe has been taking a lot of heat lately for his skeptical stance on global warming. He's been called a "social dinosaur" for his failure to accept the politically correct view. But in my opinion, Sen. Inhofe is absolutely correct to be skeptical. As the Enlightenment philosopher Denis Diderot said, "skepticism is the first step towards truth."
I'm a geophysicist who has conducted and published climate studies in top-rank scientific journals. My perspective on Sen. Inhofe and the issue of global warming is informed not only by my knowledge of climate science, but also by my studies of the history and philosophy of science.
The media hysteria on global warming has been generated by journalists who don't understand the provisional and uncertain nature of scientific knowledge. Science changes. For years we were told that drinking coffee was bad for our health and would increase our risk for heart disease. But more recent studies have shown that not only is coffee safe for our hearts, it can decrease the risk of liver cancer and is chock full of healthy antioxidants.
I read in the Edmond Sun Oct. 1 an article by an economist which indicated that temperatures are now higher than at any time in the past 12,000 years. The fact that the thermometer wasn't invented until the year 1714 ought to give us pause when evaluating this remarkable claim. Reconstructions of past temperatures are not measurements, but estimates. These estimates are based on innumerable interpretations and uncertain assumptions, all invisible to someone who only reads the headline. Better studies -- completely ignored by the major media -- have shown that late-twentieth-century temperatures are not anomalous or unusually warm.
I also read last week that in a mere 50 years mean global temperatures on Earth will be higher than they have been for the last million years. We all know that in recent years weather forecasts have become more accurate. But meteorologists can't predict what the temperature will be in 30 days. How is it that we are supposed to believe that they can reliably forecast what the temperature will be in 50 years? They can't, because Earth's climate system is complex and poorly understood.
It is not surprising that some scientists today find evidence to support global warming. True believers always find confirming evidence. In the late 18th century, a school of geologists known as Neptunists became convinced that all of the rocks of the Earth's crust had been precipitated from water. British geologist Robert Jameson characterized the supporting evidence for Neptunism as "incontrovertible." The Neptunists were completely wrong, but able to explain away any evidence that appeared to contradict their theory. A skeptic pointed out that not all rocks had their genesis in the ocean because he had observed molten lava from a volcano cool and solidify into rock. Unperturbed, the Neptunists calmly explained that the heat of the volcano had merely melted a rock that had been originally generated in water.
Around 1996, I became aware of how corrupt and ideologically driven current climate research can be. A major researcher working in the area of climate change confided in me that the factual record needed to be altered so that people would become alarmed over global warming. He said, "We have to get rid of the Medieval Warm Period."
The Medieval Warm Period was a time of unusually warm weather that began around 1000 AD and persisted until a cold period known as the "Little Ice Age" took hold in the 14th and 15th centuries. The warmer climate of the Medieval Warm Period was accompanied by a remarkable flowering of prosperity, knowledge, and art in Europe. But the existence of the Medieval Warm Period was an "inconvenient truth" for true believers in global warming. It needed to be erased from history so that people could become convinced that present day temperatures were truly anomalous. Unfortunately, the prostitution of science to environmental ideology is all too common.
Sen. James Inhofe is not only correct in his view on global warming, but courageous to insist on truth, objectivity, and sound science. Truth in science doesn't depend on human consensus or political correctness. The fact that the majority of journalists and pundits bray like sheep is meaningless. Galileo, another "social dinosaur," said "the crowd of fools who know nothing is infinite."
David Deming is a geophysicist, an adjunct scholar with the Oklahoma Council of Public Affairs (ocpathink.org), and an associate professor of Arts and Sciences at the University of Oklahoma.
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