Lessons learned from catastrophic and deadly wildfires that ravaged California in recent years could help residents and communities in and near forested areas limit damage from future fires, a first-of-its-kind study suggests. And experts say the researchers' conclusion that clearing flammable materials for five feet around houses - the area targeted as Zone 0 under a looming and controversial state-wide regulation - should also help residents in fire-risk zones understand the need for such measures.