"When the facts change, I change my mind. What do you do, sir?"
The US Senate Committee on Environment and Public Works reports that Australian, Canadian, New Zealand and British scientists have turned sceptics on global warming. (French, Israeli, and American scientists have as well.) Dr. David Evans, who handled carbon accounting for the Australian Government, explains,
“I devoted six years to carbon accounting, building models for the Australian government to estimate carbon emissions from land use change and forestry. When I started that job in 1999 the evidence that carbon emissions caused global warming seemed pretty conclusive, but since then new evidence has weakened the case that carbon emissions are the main cause. I am now skeptical. . .after 2000 the evidence for carbon emissions gradually got weaker – better temperature data for the last century, more detailed ice core data, then laboratory evidence that cosmic rays precipitate low clouds. “As Lord Keynes famously said, ‘When the facts change, I change my mind. What do you do, sir?’”
Evans noted that he benefited from climate fears as a scientist. “And the political realm in turn fed money back into the scientific community. By the late 1990's, lots of jobs depended on the idea that carbon emissions caused global warming. Many of them were bureaucratic, but there were a lot of science jobs created too. . ."
After reading the other scientists at the Senate site, you might feel it's time we started addressing the real problems we can do something about.