Ten years ago we all believed in global warming.
In 1999/2000 I was living in California and working one week a month in Bristol, England and Meylan, France. I remember flying into Heathrow in February with the temperature 15C, and seeing people water skiing on a lake in Windsor. The grass was always green. People in Grenoble complained that they could no longer ski at the 1968 venues. The summer of 1998 was the coldest on record along the California Coast. Colorado suffered a terrible drought from 2001-2003.
We all believed for twenty years that it was due to global warming – as Hansen predicted.
But then something happened. The climate swang back the other direction (like it always does.) This was not a CO2 driven monotonic trend, but rather a cycle.
Most people accepted the fact that they were wrong and moved on. Others just started manipulating the data in hopes that they could control the climate by lying to themselves and everyone else. An adult might label that sort of behaviour – “insanity.”