A Wikipedia editor and UK Green Party activist named William Connolley, doctored literally thousands of entries, to conceal the fact that, during the Medieval period, there was a global warming spell, following the Little Ice Age. The fact of this Medieval Warm Period exposes the lie about man-caused global warming, the chief argument for radical population reduction and deindustrialisation

https://www.ukcolumn.org/article/wikipedia-exposed-part-climategate-scandal