Right now there is an eruption on the mid-continent rift that has isolated Europe from access by air. It is putting enough ash in the atmosphere that it could well erase any warming possibly caused by man. Perhaps even inducing a cooling trend. And what is our idiot Congress busy doing ? Trying to pass legislation to 'save the planet' from man-made global warming. Absolute stupidity. Relatively speaking man's effect on global warming is about like a mosquito fart in a hurricane.