In brief
A new study published in Science reports that wildfires causing substantial economic damage have increased approximately fourfold since the 1980s, primarily driven by climate change and human encroachment into fire-prone areas. The study reveals that these catastrophic fires now average nearly nine occurrences per year, with extreme weather conditions linked to climate change exacerbating the situation. Notably, 43% of the 200 most damaging fires occurred in the last decade alone.
Recent research has unveiled that Earth's costliest wildfires are occurring four times more frequently now than they did during the 1980s. This alarming trend has been attributed to human-induced climate change and the increasing migration of people into wildland areas.
Published in the journal Science, the study evaluates wildfires not by the area burned but rather by the economic and human damages incurred. This fresh approach has led researchers to conclude that there is a marked escalation in 'societally disastrous wildfires' linked closely to climatic changes.
A team comprising Australian, American, and German scientists analyzed the 200 most detrimental fires since 1980, factoring in the damage as a percentage of each country's Gross Domestic Product (GDP), adjusted for inflation. The findings revealed that the frequency of large, damaging wildfires has increased roughly 4.4 times from 1980 to 2023. Notably, lead researcher Calum Cunningham highlighted that as many as 43% of these catastrophic fires occurred within the last decade, signifying a serious wildfire crisis.
The study observed that while the globe averaged only two catastrophic fires annually in the 1980s, the numbers have skyrocketed to an average of nearly nine per year between 2014 and 2023, including a staggering 13 in 2021. Researchers noted a drastic surge in the number of damaging fires starting in mid-2015, coinciding with increasingly extreme climatic conditions.
Regions such as the Mediterranean, particularly around Greece, Italy, Spain, and Portugal, along with parts of the Western United States like California, exemplify hotspots for these disastrous events. Cunningham emphasized that changes in climate are leading to heightened fire risks in densely populated areas, prompting the need for targeted management of ecological destruction caused by intense fires.
The research also indicates a troubling trend where the frequency of fires resulting in at least 10 fatalities has significantly tripled in recent years. High-profile examples such as the 2018 Paradise fire, the devastating Lahaina fire in 2023, and devastating fires in Los Angeles in 2025 further illustrate this alarming phenomenon.
This innovative study sheds light on the multifaceted causes of wildfire crises, especially emphasizing the role of extreme weather conditions driven by climate change. Researches captured over four decades of economic data in the context of fire events, blending insights from insurance and disaster databases to draw informed conclusions.
Experts outside the research acknowledged the validation of common perceptions: fires causing major economic damage and loss of life tend to occur in populated regions experiencing severe weather conditions exacerbated by climate trends. The consensus emphasizes the urgent need for better preparedness in combating the increasing threat of wildfires globally.