Events of 2011 show that no matter how solid the science, some people will never accept that humans are causing global warming.
One version of the myth of King Midas holds that he was not greedy. Instead, he loved his daughter so much that he longed to leave her a stable future. When given the chance, he asked for the golden touch as a way to create an endowment. But when they embraced, she turned to gold as well. In trying to protect his beloved daughter, Midas destroyed her.
Some climate change deniers have the same admirable motive as Midas. The actions required to solve climate, they fear, will preclude us from capturing the wealth that can benefit or save many children today. Even the left argues that a rising economic tide lifts all boats, despite the fact that continued growth probably dooms the planet to runaway warming. Environmentalists fear that no action on climate condemns us to an even more costly fate that threatens every child, forever.
Finding a fix, then, seems close to impossible. What we learned in 2011--a banner year for human understanding of climate change and its impact on our lives--helps explain why.
In October, climate-change skeptic Dr. Richard Muller released the results of a two-year study at the Berkeley Earth Surface Temperature Project that was funded in part by the Koch brothers, leading climate deniers. Muller's report, in his own words, found that "global warming is real." In fact, Muller found warming to be "on the high end" of what others had found. The results were reported in the Wall Street Journal's editorial page.
2011 also gave a taste of what climatologists have long predicted: that a warmer world will experience more severe weather events, both droughts and storms. PBS reported on "mind-boggling extreme weather" resulting from warming, what Dr. Jeff Masters, Director of Meteorology at the Weather Underground, Inc. calls "steroids for the atmosphere." This summer, droughts in the Southwest matched those of the dust bowl and a tornado outbreak blew away the record 1974 season. USA Today reported how natural disasters were straining FEMA's budget. In the last week of 2011, Vermont fixed the last of the roads destroyed by flooding from Hurricane Irene.
At the same time, still more peer-reviewed science came out showing that the anthropogenic warming signal is unmistakable. Grant Foster and Stefan Rahmstorf's paper in Environmental Research Letters stripped out the known non-human influences on climate (El Niño, volcanic aerosols and solar variability, among others) and found human-induced warming to be clear and consistent.
Meanwhile, a new paper by Kevin Anderson and Alice Bows, from the Tyndall Center for Climate Change Research at the University of Manchester and published in Philosophical Transactions of the Royal Society argued that society is at substantial risk of exceeding warming of 2°C, the threshold widely seen to be the difference between something to which we could possibly adapt and disaster.
Last, and least noted, has been the inability of climate deniers to produce peer-reviewed science showing that warming is not human caused. Their anecdotal claims are easily debunked: the sun is at a minimum, despite record global temperatures. Cosmic-ray activity hasn't coincided with modern warming. Volcanoes emit far less CO2 than humans. Water vapor is a greenhouse gas that is exacerbated by CO2 induced warming. The earth has warmed before, of course, but always with a well understood cause, just like we have today.