Says Bill Muller, in a stunning turnaround:
"Humans are almost entirely the cause."
And calls for a reduction of greenhouse emissions, though Koch interests are heavily-involved in fossil-fuel industries:
Here's how Muller put it in a New York Times op-ed:Richard Muller, a physicist who spent two years trying to see if mainstream climate scientists were wrong about the earth's climate changes, determined that they were right, the Associated Press reported.His findings showed the temperature had risen about 1.6 degrees since the 1950s."The skeptics raised valid points and everybody should have been a skeptic two years ago," Muller told the AP. "And now we have confidence that the temperature rise that had previously been reported had been done without bias."
Rather amazing that Muller and long-time global warming writer Bill McKibben find common ground.Call me a converted skeptic. Three years ago I identified problems in previous climate studies that, in my mind, threw doubt on the very existence of global warming. Last year, following an intensive research effort involving a dozen scientists, I concluded that global warming was real and that the prior estimates of the rate of warming were correct. I’m now going a step further: Humans are almost entirely the cause.My total turnaround, in such a short time, is the result of careful and objective analysis by the Berkeley Earth Surface Temperature project, which I founded with my daughter Elizabeth. Our results show that the average temperature of the earth’s land has risen by two and a half degrees Fahrenheit over the past 250 years, including an increase of one and a half degrees over the most recent 50 years. Moreover, it appears likely that essentially all of this increase results from the human emission of greenhouse gases.These findings are stronger than those of the Intergovernmental Panel on Climate Change, the United Nations group that defines the scientific and diplomatic consensus on global warming.