Ron Johnson, a businessman and the likely Republican nominee against Sen. Russ Feingold (D-WI), is elaborating on his previous statements that sunspots are the cause of global warming. And along the way, he's invoking some interesting (and questionable) examples from archaeology.
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In an interview with the local ABC station in Madison, Johnson further explained that he believes global warming is caused more by "solar activity" -- he said it could be sunspots or solar flares -- than anything man is doing. (In fact, sunspot activity and overall solar radiance have gone down slightly in the last ten years, while global temperatures have gone up.) And in any case, he said that government investments in clean energy would not work and would only harm the economy.
Johnson also invoked an interesting -- though not altogether accurate -- argument supposedly proving that climate change is no biggie. "There's a reason Greenland was called Greenland," he said. "It was actually green at one point in time. And it's been, since, it's a whole lot whiter now."
It's an intriguing example --Â and not quite true.