Why some Los Angeles homes are being built to resist wildfires — and some aren't

The wildfires in LA were so large, they burned areas that weren't considered at risk. That means as residents start the process of rebuilding, thousands of them won't be required to use fire-resistant building materials. Experts say those materials dramatically reduce the chance a house will burn. But now, Los Angeles officials are changing the rules to require more homeowners to use these materials - a rare example of tightening the rules post-disaster, instead of loosening them.