In 1999, Hansen told us that there had been no warming in the US since 1950.
in the U.S. there has been little temperature change in the past 50 years, the time of rapidly increasing greenhouse gases — in fact, there was a slight cooling throughout much of the country
And since 1999, the US has cooled.
Despite the lack of warming from 1950 to 1999, and the cooling since 1999, Hansen now shows a strong US warming trend since 1950.
In Hansen’s world of climate data tampering, you can add a negative number to zero – and get a positive number.