Breaking: Some chemist sort of claims that CO2 causes bad weather, then says: "It’s not very likely, but there is some possibility that we would have catastrophes"

Nobel Prize-Winning Scientist Cites Evidence of Link Between Extreme Weather, Global Warming

Newswise — PHILADELPHIA, Aug. 20, 2012 — New scientific analysis strengthens the view that record-breaking summer heat, crop-withering drought and other extreme weather events in recent years do, indeed, result from human activity and global warming, Nobel Laureate Mario J. Molina, Ph.D., said here today.

Molina, who shared the 1995 Nobel Prize in Chemistry for helping save the world from the consequences of ozone depletion, presented the keynote address at the 244th National Meeting & Exposition of the American Chemical Society, the world’s largest scientific society.
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Molina emphasized that there is no “absolute certainty” that global warming is causing extreme weather events. But he said that scientific insights [like what, specifically?] during the last year or so strengthen the link. Even if the scientific evidence continues to fall short of the absolute certainly measure, the heat, drought, severe storms and other weather extremes may prove beneficial in making the public more aware of global warming and the need for action, said Molina.
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Molina, who is with the University of California, San Diego, suggested a course of action based on an international agreement like the Montreal Protocol that phased out substances responsible for the depletion of the ozone layer.

“The new agreement should put a price on the emission of greenhouse gases, which would make it more economically favorable for countries to do the right thing. The cost to society of abiding by it would be less than the cost of the climate change damage if society does nothing,” he said.
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Molina said that it’s not certain what will happen to the Earth if nothing is done to slow down or halt climate change. “But there is no doubt that the risk is very large, and we could have some consequences that are very damaging, certainly for portions of society,” he said. “It’s not very likely, but there is some possibility that we would have catastrophes.”