Comment by ColdStream

James Hansons Senate hearing was in 1988, so at least 38 years since it was brought front and center.

https://en.wikipedia.org/wiki/Senate_Hearing_of_James_E._Han...

Hansen is still going and has been ringing the alarm that we have deeply under estimated the relative carbon loading and heating potential on emissions. There is a real fear that we have locked in a lot more warming potential than the models have been predicting via several factors. Namely carbon warms slightly more than anticipated, more methane releases, great water vapor levels as a result of the previous two and reduced reflective materials decreasing our relative albedo.