Forty years ago, NOAA and NASA predicted 18 feet of sea level rise in as little as fifty years.
Eight years ago Hansen predicted 30C polar warming.
Antarctica just had their coldest winter on record and Arctic temperatures are 2C below the 1979-2000 mean.
In 1988, Hansen predicted that the Manhattan West Side Highway would be underwater in 20-30 years.
The highway still seems to be there however.