Guest: Heather Scoffield, Toronto Star's Ottawa bureau chief and economics columnist

COP26, the United Nations-led summit on climate change is underway in Glasgow, where world leaders and their delegates are meeting for a pivotal moment in the fight against climate change. Despite the Paris Climate Agreement in 2015, many of the world's biggest emitters have not backed up promises with concrete policies. Climate activist Greta Thunberg has accused leaders of empty words and "blah, blah, blah" when it comes to taking the threat seriously. The world is heading to a 2.7 degree Celsius increase by 2050, according to the UN's latest report on climate change. Are countries around the world treating climate change with enough urgency? Will COP26 be a turning point or a final missed opportunity to stop the climate crisis?