Naomi Klein and Cardinal Peter Turkson are to lead a high-level conference on the environment, bringing together churchmen, scientists and activists to debate climate change action. Klein, who campaigns for an overhaul of the global financial system to tackle climate change, told the Observer she was surprised but delighted to receive the invitation from Turkson’s office. 'A lot of people have patted the pope on the head, but said he’s wrong on the economics. I think he’s right on the economics,” she said, referring to Pope Francis’s recent publication of an encyclical on the environment. Release of the document earlier this month thrust the pontiff to the centre of the global debate on climate change, as he berated politicians for creating a system that serves wealthy countries at the expense of the poorest.