Climate Change Skeptic Changes Camp

A vocal skeptic of global warming now argues that the climate is changing, and humans are to blame.

By | July 31, 2012

Global wind patternsNASA

Physicist Richard Muller, leader of the Berkeley Earth Project at the University of California, Berkeley, has been a known critic of studies backing the conclusion that human activity is a prime driver of global warming. But after completing a new study that he spearheaded, which uses new methods and data to corroborate past studies, Muller has changed his stance—acknowledging publicly that the average temperature on Earth has indeed risen by 2.7 degrees Fahrenheit over the past 250 years and that human activity is "the most straightforward explanation," BBC News reported.

“Three years ago I identified problems in previous climate studies that, in my mind, threw doubt on the very existence of global warming,” Muller wrote in a New York Times editorial piece. "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."

Muller’s un-peer-reviewed study was made available online yesterday (July 30). The team submitted the study to the Journal of Geophysical Research: Atmosphere.

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Avatar of: Heber Rizzo

Heber Rizzo

Posts: 1457

July 31, 2012

Muller has never been an skeptic of anthropological global warming.

Avatar of: agelbert


Posts: 50

August 1, 2012

Another scientist has ventured forth from the "it's not happening if we don't have peer reviewed, statistically significant data backed by exhaustive research" Procrustean Bed of modern credentialed scientific enquiry. It's good to see another human being embracing a tremendous capacity for the obvious.

When he figures out that the current CO2 ppm concentration rivals the PETM (Paleocene–Eocene Thermal Maximum) 55 MILLION YEARS AGO, he'll really wake up.

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