Fiercer, more frequent fires may reduce carbon capture by forests

Global study shows blazes diminish forest density and tree size, making woods likely to sequester less carbon

More fierce and frequent fires are reducing forest density and tree size and may damage forests' ability to capture carbon in the future, according to a global study.

Although forest fires are naturally occurring phenomena and natural forests regenerate, global heating and human activity have caused the frequency and intensity of fires to rise. Wildfires burn 5% of the planet's surface every year, releasing carbon dioxide into the atmosphere equivalent to a fifth of our annual fossil fuel emissions.