Fossil fuel pollution is overheating Canadian forests, spawning an out-of-control wildfire crisis. Wildfire is now incinerating four times more forest carbon than during the 1990s. …This accelerating new source of CO2 is adding to the already massive and growing emissions of CO2 caused by humans burning fossil oil, gas and coal. Canada’s continent-spanning forest is especially vulnerable to this rising heat. Its billions of trees, spread across hundreds of millions of hectares, are overheating at two to three times the global pace. …Let’s start with the 1990s. During that decade, wildfire emissions totalled 800 MtCO2. …Compare that to the most recent decade (2016-2025). Over these 10 years, wildfires released four times more carbon than they did during the nineties – a total of 3,200 MtCO2. …But wildfires also impact the climate system. And that climate impact unfolds over decades.