a group of scientists headed by geologist Shaun Marcott launched the latest salvo in the global warming war. They announced that they had reconstructed the last 11,000 years of Earth climate history, based on various proxies, and had found that in the 20th century there was an unprecedented uptick in temperature. The Marcott paper was hailed by liberal media outlets; to cite just a few examples:
* ?We?re screwed: 11,000 years? worth of haclimate data prove it.? The Atlantic, March 10.
But when real scientists?that is, those who apply a skeptical, scientific approach rather than a religious attitude of fervor?studied the Marcott paper, it quickly fell apart.
It turned out that Marcott and his colleagues had created the 20th century warming spike?which was, in reality, the sole purpose of their exercise?by changing the dates on some of the samples they used as proxies.
Hockey Stick Redux | Power Line
Validity of Marcott et al. PART II | Watts Up With That?