Bush aide says warming man-made ... BBC

While his daddy Cheney was having him fire the generals who sassed him, did George W overlook this guy?

Professor John Marburger, who advises President Bush, said it was more than 90% certain that greenhouse gas emissions from mankind are to blame.

...

Professor Marburger said humanity would be in trouble if we did not stop increasing carbon emissions.

"The CO2 accumulates in the atmosphere and there's no end point, it just gets hotter and hotter, and so at some point it becomes unliveable," he said.

Professor Marburger said he wished he could stop US emissions right away, but that was obviously not possible.

US backing for the scientific consensus was confirmed by President Bush's top climate advisor, James Connaughton.

The chair of the White House Council on Environmental Quality told BBC News that advancing technology was the best way to curb the warming trend.

"You only have two choices; you either have advanced technologies and get them into the marketplace, or you shut down your economies and put people out of work," he said.

"I don't know of any politician that favours shutting down economies."

....

"I think 2C is rather arbitrary, and it's not clear to me that the answer shouldn't be 3C or more or less. It's a hunch, a guess."

The truth, he said, was that we just do not know what the 'safe' limit is.