Overview
- The fires burned 4% of Canada's forests, an area the size of North Dakota.
- Emissions from the fires were more than four times Canada's annual fossil fuel output.
- Researchers used satellite data to measure the carbon emissions with high accuracy.
- The fires forced 232,000 people to evacuate and caused severe air pollution in North America.
- Scientists warn that such extreme fire seasons could become the norm by the 2050s.