Guardian: Leading figures on the American right are launching a series of pre-emptive attacks on the pope before this weeks encyclical, hoping to prevent a mass conversion of the climate change deniers who have powered the corps of the conservative movement for more than a decade. The prospect that the pope, from his perch at the pinnacle of the Catholic church, will exhort humanity to act on climate change as a moral imperative is a direct threat to a core belief of US conservatives. And conservatives ...