Michael Mann, creator of the infamous “hockey stick,” filed suit against Canadian climatologist Dr. Timothy Ball after Ball said Mann “belongs in the state pen, not Penn.
Dr Ball called into question Mann’s research and Dr. Ball showed that CO2 trails global temperatures, not leads them.
However, Mann refused to show his publicly funded research and how he came up with the “hockey stick” so was slapped with a contempt of court charge.
Mann’s version of history somehow makes the Medieval Warm Period disappear and shows a pronounced rise in temperature in the late 20th century (the ‘hockey stick’).
Ball’s graph, which used more reliable and widely available public data, shows a much warmer Medieval Warm Period, far hotter than today.
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Graph source:
http://principia-scientific.org/breaking-fatal-courtroom-act-ruins-michael-hockey-stick-mann/
See also:
https://www.iceagenow.info/looks-like-michael-hockey-stick-mann-sabotaged-lawsuit-dr-ball/