The Climate Confabulators’ Sinking Ships

In the late 1990s, as the idea of global warming began to attract widespread public attention and research funding, the claim that recent warming was unprecedented and dangerous was conflicted by extensive evidence of a preceding Little Ice Age (LIA) and, before that, a Medieval Warm Period (MWP) that was as warm or warmer than the present. As later revealed in the Climategate email leak, leading proponents of the warming threat privately discussed a need to get rid of the LIA and MWP.  Soon thereafter this was achieved by publication of what became known as the Hockey Stick graph (Mann, Bradley & Hughes 1998), which purported to show no statistically significant trend in average global temperature over the previous millennium until a sudden steeply increasing rise over the 20th century.  In the accompanying study the LIA and MWP were dismissed as only unimportant local fluctuations limited to north-western Europe.