Wildfires in boreal forests released a record amount of CO2 in 2021
If it continues, the trend threatens to make fighting climate change even harder
![A photo of smoke rising above a forest.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/03/030223_no_boreal-fires_feat.jpg?fit=1030%2C580&ssl=1)
In 2021, boreal wildfires, such as this one in the Gorny Ulus area in Siberia, released record-breaking amounts of carbon dioxide.
DIMITAR DILKOFF/AFP via Getty Images