In 1999, NASA published this graph, showing that the 1930s was by far the warmest decade in the US
The graph was accompanied by this text :
Empirical evidence does not lend much support to the notion that climate is headed precipitately toward more extreme heat and drought. The drought of 1999 covered a smaller area than the 1988 drought, when the Mississippi almost dried up. And 1988 was a temporary inconvenience as compared with repeated droughts during the 1930s “Dust Bowl” that caused an exodus from the prairies, as chronicled in Steinbeck’s Grapes of Wrath.
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
They have since eliminated the hot 1930s from the temperature record. Their current graph looks like this :
The animation below shows how they altered the temperature data to wipe out the inconvenient 1930s, and massively warm the 1990s.
The next animation uses NASA’s published data from 1999 and 2013, and shows how they turned a strong US cooling trend into a strong warming trend.
Albert Einstein sarcastically said :
“If the facts don’t fit the theory, change the facts”