Gregor Robertson, the mayor of Vancouver, says he plans to encourage the Pope to ramp up pressure on national governments across the globe to take action on climate change when he meets with the Catholic leader later this month. Mr Robertson will be the only Canadian to join 30 representatives of cities in Europe, Africa, Asia and the Americas for a two-day visit with Pope Francis in Vatican City on 21 July. Meanwhile on Wednesday and Thursday this week hundreds of delegates have attended a two-day Climate Summit of the Americas in Toronto. Former Mexican president Felipe Calderon, former US vice-president Al Gore and California Governor Jerry Brown were among the delegates. The summit emphasised the role that provinces, states and other sub-national governments can play in reducing greenhouse gas emissions. World leaders will also meet later this year in Paris for the UN Climate Change Conference. See http://www.640toronto.com/2015/07/08/66933/