Years of drought and decades of aggressive fire exclusion have left North American forests at high risk for future catastrophic fires. Forest settings are a magnet for recreational opportunities and for rapidly growing residential developmentputting an increasing number of citizens and their property into the path of wildfires. Recordsetting wildfires initiated the twentyfirst century and motivated the rise to prominence of wildfire on the political agenda, prompting important and farreaching new public policy initiatives. To be effective, these policies must be informed by sciencebut that...