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Since 1973 climate models have proven to be quite accurate: https://www.carbonbrief.org/analysis-how-well-have-climate-models-projected-global-warming https://w

• Symmetry 8y ago
  And, importantly, scientists were worried about greenhouse warming before it was every actually observed. All the theories about Japan's supposedly more efficient system came well after Japan's rapid growth started. EDIT: Well, to add a bit of detail everybody knew way back when that if CO2 ended up in the atmosphere it would cause global warming. But most scientists thought it be absorbed by the sea instead and atmospheric CO2 would barely rise. Turns out that secondary effects made the sea go and release the CO2 it absorbed so here we are. I think scientific consensus didn't swing against absorption until the data really started to come in showing it wasn't but the important thing is that many people predicted Global Warming in advance of the evidence and the only credible argument against it, before the data, was something we now clearly see isn't happening.