In 1974 our top climate experts reported global cooling, and blamed all bad weather on it.
All of the climate agencies in the US and Britain reported major global cooling – and no net warming over the previous century.
In 1979, global cooling was indisputable.
In 1989, NOAA’s top climate expert reported Earth cooled from 1921 to 1979.
NASA has since erased all of the post-1940 cooling, turned the NOAA 1921 to 1979 cooling into 0.5C warming, and now blames all bad weather on global warming instead of cooling.
Disclaimer : Mosher says what NASA is doing is all top flight science.