Global warming isn’t behind California’s wildfires, and fires around the world are declining
By Bjorn Lomborg. Excerpts:
"Age-adjusted heat-related death risk in California has risen modestly in recent decades—enough to account for 90 additional annual deaths"
"Warming has helped reduce age-adjusted cold-related deaths by more than 5,000 a year"
"In the early 2000s, about 3% of the world’s land burned annually—in total acreage, an area about twice Mexico’s size. The trend since has been downward: 2022 hit a record low of 2.169%, and 2025 nearly matched it at 2.198%, the second-lowest."
"global warming isn’t the main driver of fires in North America. Poor planning puts more houses in extreme fire-risk zones. California’s surge in wildfires stems overwhelmingly from poor forest management: decades of fire suppression that built up fuels, with almost no prescribed burns"
"nearly 20% of the state needs controlled burns to reduce risk, yet only 0.1% to 0.3% receives them annually."
"deaths from fire-related air pollution declined between 2000 and 2019, even as the global population increased over 26%"
"In the early 1900s, nearly 4% of global land burned yearly. Last year, only 2.2% did."
"2024 Nature paper that declared extreme fire events doubled globally from 2003 to 2023. But a subsequent Nature review demolished that claim"
"even if the world’s wealthiest nations made major emissions reductions . . . It would avert less than 0.2 degree Fahrenheit of warming at significant cost"