For 1st Time, Fires Are Biggest Threat to Forests’ Climate-Fighting Superpower
Forests play a major role pulling planet-warming carbon dioxide out of the atmosphere. As the world heats up, some forests are becoming emitters in their own right.
In 2023 and 2024 the world’s forests absorbed only a quarter of the carbon dioxide they did in the beginning of the 21st century, according to data from the World Resources Institute’s Global Forest Watch.
Those back-to-back years of record-breaking wildfires hampered forests’ ability to tuck away billions of tons of carbon dioxide, curbing some of the global warming caused by emissions from burning fossil fuels.
Those two years also marked the first time wildfires surpassed logging or agriculture-driven deforestation as the biggest factor lowering forests’ carbon-capturing ability. It’s an emerging pattern that’s different from the last big drop, in 2016 and 2017, which was largely the result of increased deforestation for agriculture.
Carbon dioxide, a greenhouse gas, acts as a blanket in the atmosphere, trapping the sun’s heat and warming the environment. In some places, rampant burning and deforestation have tipped the scales, turning forests into a source of carbon dioxide emissions instead of a tool for capturing them.
