the real basis for all thiscontroversy? The AGW version has radiation from the sun hitting the earth , being reflected back up and re-reflected back to earth by C02. The 2nd law of thermodynamics indicates that heat can only travel one way.. to cold. Thus re-reflection to source is impossible, even less so when you include the law of radiation; it diminishes by the inverse square law, thus it can never be reversed to it's source, in this case, the earth.
Secondly, Co2 is claimed to reflect heat. it does, weakly, but only in the prescence of a high -infra-red heat source. High infra-red is produced by red heat- 800deg c and above. Below that, and at ambient temperatures you get no signals. That is why Co2 detectors have to have a red hot wire to get them to work.
Oh, and to the gentleman of 40 seasons, I saw and enjoyed the 30's that has been shown to be the hottest decade of the 20th century, in spite of Hansen's attempts to ignore this.
For those who believe the propaganda about massive scientific support for AGW among scientists, the House of Lords select committee investigated this and found that the 'deniers' among leading scientists healthily outnumbered it's proponents. Over 32,000 leading scientists signed a petition saying that they did not agree that mankind had any influence on climate, rather more that the much touted '2000' believers.
Toward the end of the 1980's a scientist, with his computer, forecast that by 2010, London would be drowned with the tube flooded. I know that it is not quite 2010 but it seems most unlikely to happen. Last year, another, or possibly the same one with a low learning curve, forecast that London would be drowned and the tubes flooded in 25 years. We have paid out vast sums of money on supercomputers and programmers but supercomputer or desktop, the same law applies...gigo.
As I understand the scientific method, one has a theory, designs and makes experiments to prove or disprove, said experiments to be replicable by any other scientist. We seem to have got no further than a highly questionable theory.