A Century of Saving Forests Built the Inferno

Following the Great Fires of 1910 that killed 85 people and burned 3 million acres, the U.S. adopted total fire suppression. The Forest Service's "10 AM policy" (1935) aimed to suppress every fire by 10 AM the morning after detection. This policy was extraordinarily effective: the vast majority of wildfires were extinguished quickly, and annual acreage burned declined dramatically for decades. But a century of successful suppression created a massive "fire deficit." Forests that historically burned every 5–30 years accumulated decades of unburned fuel. Parks et al. (2024) show that suppression raised average fire severity by an amount equivalent to a century of fuel accumulation or a century of climate change. Suppression preferentially removes low- and moderate-severity fires (easier to suppress), concentrating remaining fires under extreme conditions — making the fires that escape suppression catastrophically worse.

74% of the western U.S. is in a "fire deficit" — more land needs to burn than currently does. Nearly 38 million hectares are historically behind on burning; closing the gap would require ~3.8 million hectares per year for a decade. Federal suppression spending has reached $4.39 billion per year (2021), a 6× increase from 1990s levels — and costs continue to grow. California historically burned ~4.5 million acres annually (much by Indigenous peoples); today ~125,000 acres receive prescribed fire treatment — a 97% shortfall. Fire-caused areas burned increase 3–5× faster over time relative to a counterfactual with no suppression.

Prescribed burning is proven effective (62–72% reduction in subsequent wildfire severity) but faces massive institutional barriers. Liability laws in most states expose burn managers to personal liability if fires escape — a deterrent that effectively prevents public-land prescribed burns near communities. Air quality regulations restrict burn windows to a few days per year, as prescribed fire smoke is regulated the same as industrial emissions. Workforce shortages limit prescribed burn capacity — most fire funding goes to suppression, not prevention. 70% of U.S. prescribed burns occur in the Southeast, not the fire-deficit West where they're most needed. Communities resist prescribed burns (smoke, perceived risk) but demand suppression of wildfires — perpetuating the cycle. "Let it burn" policies (managed wildfire) face political impossibility near any settlement.

Liability reform that provides "good Samaritan"-style protection for prescribed burn managers following approved burn plans. Air quality regulation reform that classifies prescribed fire smoke differently from industrial emissions (smoke now vs. catastrophic fire smoke later). Massive expansion of prescribed burn workforce and training programs. Land-use planning that creates defensible space rather than extending communities deeper into fire-prone landscapes.

A team could model the prescribed burn capacity needed to close the fire deficit in a specific western U.S. forest system, analyzing the constraints (burn windows, workforce, liability, air quality) that limit current throughput. Alternatively, a team could design a community smoke-impact communication system that provides real-time data during prescribed burns, addressing the public acceptance barrier. Forestry, atmospheric science, policy analysis, and communication design skills apply.