From the article linked above:

"A prominent scientist who was skeptical of the evidence that climate change was real, let alone that it was caused by humans, now says he has made a "total turnaround." Richard Muller, a professor of physics at the University of California, Berkeley, says he has become convinced that "the prior estimates of the rate of warming were correct," and that humans are "almost entirely the cause" of that warming.

Muller co-founded the Berkeley Earth Surface Temperature (BEST) team two years ago in order to independently assess what he viewed as questionable evidence of global warming. In a series of papers published last year, BEST presented their statistical analysis of 1.6 billion temperature reports spanning the last 200 years, controlling for possible biases in the data that are often cited by skeptics as reasons to doubt the reality of global warming.

Their analysis indicated that global warming is real — that the average global land temperature has risen by 2.5 degrees Fahrenheit (1.4 degrees Celsius) since 1750, including 1.5 degrees F (0.9 degrees Celsius) in the past 50 years. The numbers closely agree with the findings of past studies by the National Oceanic and Atmospheric Administration (NOAA), NASA and others; but finally, they were rigorous enough to satisfy Muller.

Now, in a brand new study that probed the causes of that warming, the BEST team says it has cleared from blame the natural variations in Earth's climate that so often get implicated by skeptics. Muller and his colleagues implicate carbon dioxide emissions by humans as essentially the sole cause of global warming."

Thank you, Professor Muller. Now will all the prominent climate change deniers please shut the fuck up and let something get done about it? We're running out of time.