In brief
Research published in the journal Science highlights a significant increase in the frequency and economic impact of wildfires globally. The last decade alone accounts for 43% of the most damaging fires since 1980. Key regions impacted include Europe and North America, particularly in the Mediterranean and the Western United States. The study calls for better targeting of efforts to manage and prevent wildfires, emphasizing the role of climate change in exacerbating fire conditions.
According to a new study, wildfires have become increasingly frequent and costly, occurring four times more often today than in the 1980s due to human-induced climate change and increased human encroachment into wildlands.
This research, published in the prestigious journal Science, measured the economic and human damage from wildfires rather than the traditional area burned, revealing a “climate-linked escalation of societally disastrous wildfires.”
The study's lead author, Calum Cunningham, a pyrogeographer at the University of Tasmania, noted a 4.4-fold increase in the frequency of the 200 most damaging fires worldwide since 1980. Alarmingly, approximately 43% of these damaging fires occurred within the past decade alone.
Historically, the globe experienced about two catastrophic fires yearly in the 1980s, but from 2014 to 2023, this number soared to nearly nine annually, with 2021 witnessing an unprecedented peak of 13 major fire events. The spike in such severe fires aligns with increasingly extreme climatic conditions.
Cunningham emphasized that this dramatic increase signifies a wildfire crisis. As regions such as the Mediterranean and parts of the Western United States experience heightened fire activity, the study reinforces the notion that climate change has fostered conditions conducive to such disasters.
In addition, the research uncovered a tripling of occurrences where individual fires resulted in a minimum of 10 fatalities. Wildfires like the 2018 Paradise fire, the Lahaina fire in 2023, and those impacting Los Angeles in 2025 exemplify this trend.
Current models tend to measure wildfire impact through acreage, but Cunningham argues this metric is fundamentally flawed, neglecting the significant human and economic costs associated with fires affecting populated areas. For instance, despite being smaller in size, the Lahaina wildfire caused substantial destruction and loss of life.
The researchers utilized data from both Munich Re and the International Disaster Database, allowing them to establish the correlation between extreme fire weather and climate change. The results confirmed that extreme weather conditions, exacerbated by climate change, have increasingly affected wildfire dynamics globally.
Experts in the field, like fire researcher Mike Flannigan, indicate that this trend poses severe challenges for future fire management, calling for effective preparations against worsening conditions attributed to climate change.
