Independent (UK): Boris Johnson, one of Britain’s least environmentally friendly politicians, will this week relaunch himself as a green champion. In his maiden green speech, which aides are billing as “extremely substantial” and “a milestone event”, London’s Mayor — who used to denounce “eco-moralists” for spouting “mumbo-jumbo”– is to announce his intention to make the city the eco-capital of the world. The man who compared fear of global warming to a “Stone Age religion”, and poured scorn …