The downfall of climate change poster boy Michael Mann

Even if you’ve never heard of Michael Mann, you will have felt his baleful influence on your energy bills. He is the inventor of the hockey stick chart, which shows a sharp increase in late 20th century global temperatures, like the blade of an ice hockey stick. It put rocket boosters on the climate change scare and was used as an excuse by policymakers to send green taxes, tariffs and regulations soaring.