Thirty years ago, James Hansen made some spectacularly poor global warming predictions before Congress.
Hansen predicted two degrees global warming by 2006.
He was off by a factor of ten. Earth warmed about 0.2 degrees from June 1986 to June 2006.
Enlarged Wood for Trees: Interactive Graphs
Hansen predicted 3 or 4 degrees of US warming between 2010 and 2020
The US has seen little or no warming since 1986.
Hansen predicted a huge increase in the number of hot days at Omaha, Nebraska and Washington, DC.
The exact opposite has occurred. Both places have seen a decline in the number of hot days.
Climate scientists have no idea what they are talking about, and their CO2 superstition is not based on science.