The secretary-general of the United Nations says a new report “must sound the death knell for coal and fossil fuels,” raising renewed questions about Canada’s climate plan and the long-term viability of its traditional energy sector. The UN scientific paper says Earth is heating up so quickly due to human activity that temperatures in about a decade will blow past a level of warming that world leaders have sought to prevent. Released Monday, the landmark study amounts to a “‘code red’ for humanity” as increasingly extreme heat waves, droughts, flooding and wildfires threaten the globe, said UN chief Antonio Guterres. Federal Environment Minister Jonathan Wilkinson acknowledged that parts of Western and Northern Canada are warming at three times the global average, with the ramifications playing out in a cycle of floods and wildfires in British Columbia and elsewhere. The Liberal government has taken “aggressive climate action” through carbon pricing and a pledge to reduce greenhouse gas emissions by 40 to 45 per cent below 2005 levels by 2030, he said in a statement.