The final word of this conference - part counter-orthodox science brainstorm, part political rally - was left to a man who is not a scientist at all, Christopher Monckton, former adviser to Mrs Thatcher, now the darling of climate sceptics worldwide.
In a bravura performance he had the audience roaring at his mocking impersonation of "railway engineer Rajendra Pachauri - the Casey Jones of climate change"; hissing with pantomime fury at the "scandal" of Climategate, then emotionally applauding the American troops who have given their lives for the freedom that their political masters are surrendering to the global socialist tyranny of global warming.
His closing words were delivered in a weeping whisper, a soft prayer of praise to the American constitution and individual liberty.
As the ecstatic crowd filtered out I pointed one delegate to a copy of the Wall Street Journal on the table. A front page paragraph noted that April had been the warmest on record.
"So what?" he shrugged. "So what?"
Denial in a nutshell.