Fueling discovery with USGS wildland fire science

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Wildfires are becoming more destructive as burned area increases and as more homes are built in the wildland-urban interface, but it is unclear how these patterns are affected by changing wildfire behavior in different fuel types. To better understand changing patterns of wildfire destruction, we mapped buildings exposed to and destroyed by wildfires in the conterminous U.S. from 2000-2020. From these maps, we determined that the probability of an exposed building being destroyed by wildfire has more than tripled over the past two decades, and that more wildfire destruction is occurring in forests relative to grass and shrublands. Understanding these changing patterns can help us design more effective strategies to mitigate risk.