Canada 2023: the most devastating forest fires in the history of the country: The Canadian wildfires of 2023 have reached an unprecedented dimension, affecting the entire country from the Pacific to the Atlantic. The cause was an exceptional fire weather due to global warming, with very high temperatures already in spring, extreme drought and strong winds. The consequences of these and future forest fires, in conjunction with climate change, will greatly change Canadian forests, with destruction mainly in the southern part of the boreal forest belt and growth with a higher proportion of deciduous trees in the northern part. Adaptation measures could include preventive firefighting, the promotion of mixed forests and sustainable wood use.