Actually there is not much that Hansen predicted that has come true or even close to being true.
In 1986, Hansen predicted a large increase in hot days in Washington DC
Last month, a Government scientist predicted that the number of days here on which the maximum tempertaure exceeds 100 degrees might just climb from one day a year, on average, to 12 days a year by the year 2050, and that the number of nights in which the temperature does not fall below 80 degrees might leap from one a year to 19.
The scientist, Dr. James E. Hansen, a climatologist at the National Aeronautics and Space Administration, describing a study of the global phenomenon of ”the greenhouse effect,” told a Senate subcommittee that such temperature changes ”may significantly affect the climactic environment for the general population.”
The exact opposite has happened. The have only been three days over 100 degrees this century.
Centinel2012 