Neither have unicorns.
Mann writes in the Richmond Times-Dispatch:
Lord Monckton goes after the “hockey stick” work published more than a decade ago showing that recent warming is unusual over at least the past 1,000 years. Despite Monckton’s rambling attack, the hockey stick most certainly has not been disproved. The highest scientific body in the nation, the National Academy of Sciences, affirmed our research findings in an exhaustive independent review published in June 2006. Dozens of independent groups of scientists have independently reproduced and confirmed our findings, and more recent work by other groups summarized in the most recent Intergovernmental Panel on Climate Change report shows that recent warmth is unusual over an even longer timeframe. There are in fact numerous independent lines of evidence that humans are warming the planet and changing our climate by burning coal and other fossil fuels. And despite Monckton’s and Battig’s claims that global warming stopped 16 years ago, in fact NASA found the warming continues unabated with the past decade the warmest on record.