What's different, and why everyone from opinion columnists to cable TV 's satirical The Daily Show is paying attention is who is behind the study. One-quarter of the US$600,000 (NZ$730,000) to do the research came from the Charles Koch Foundation, whose founder is a major funder of sceptic groups and the conservative tea party movement. The Koch brothers, Charles and David, run a large privately held company involved in oil and other industries, producing sizable greenhouse gas emissions. Muller's research team carefully examined two chief criticisms by sceptics. One is that weather stations are unreliable; the other is that cities, which create heat islands, were skewing the temperature analysis. "The sceptics raised valid points and everybody should have been a sceptic two years ago," Muller said in a telephone interview. "And now we have confidence that the temperature rise that had previously been reported had been done without bias." Muller said that he came into the study "with a proper scepticism," something scientists "should always have. I was somewhat bothered by the fact that there was not enough scepticism" before. Source Although I would say this to him: The rest of us were sceptical 50 years ago.