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« Carbon dioxide is not the bogeyman – there are other causes that are much more likely to be causing climate change, to the extent that it has changed….Carbon dioxide does have a small warming effect, McQueen said, but 32 per cent of the first few molecules do the majority of the warming. The carbon dioxide content of the atmosphere, he said, is currently at 380 parts per million; if that were upped to 560 parts per million, Earth’s temperature would only rise about 0.3 degrees.”

— Ian McQueen, chemical engineer

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