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Michael Mann claims preventing Keystone pipeline is ‘climatologically necessary’ – Fellow Warmists Disagree   Related Links:  From the Left: ‘The Keystone Fight Is a Huge Environmentalist Mistake’ – Warmist admits: ‘The whole crusade increasingly looks like a bizarre misallocation of political attention’ – McKibben & Hansen blamed! Warmist Andrew Weaver suggests full development of the tarsands would boost average global temperature by just 0.03 degrees Celsius Warmist […]