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He hopes to oust Democratic incumbent Sen. Russ Feingold, who is seeking a third term. Johnson also faces small-business man Dave Westlake in the September GOP primary election. A global warming skeptic, Johnson said extreme weather phenomena were better explained by sunspots than an overload of carbon dioxide in the atmosphere, as many scientists believe.
"I absolutely do not believe in the science of man-caused climate change," Johnson said. "It's not proven by any stretch of the imagination." Johnson, in an interview last month, described believers in manmade causes of climate change as "crazy" and the theory as "lunacy."
"It's far more likely that it's just sunspot activity or just something in the geologic eons of time," he said. Excess carbon dioxide in the atmosphere "gets sucked down by trees and helps the trees grow," said Johnson. Average Earth temperatures were relatively warm during the Middle Ages, Johnson said, and "it's not like there were tons of cars on the road."
He said he disagreed with any government spending to try to address global warming. A strong economy is the best way to preserve a good environment, Johnson said. Trying to fix global warming is "a fool's errand," Johnson said. "I don't think we can do anything about controlling what our climate is."
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http://www.jsonline.com/news/statepolitics/100814454.html