For five consecutive days, wildfires fanned by strong winds have ravaged neighborhoods in Los Angeles, destroying more than 12,300 homes and buildings and leaving at least 16 dead. Fresh evacuations were ordered from Mandeville Canyon to the Interstate 405 freeway on Friday evening because of a flare-up of the massive Palisades Fire.

As devastating wildfires raged across Los Angeles County this week, firefighters battling the blazes encountered fire hydrants that had no water. Why it matters: The dry fire hydrants sparked political outrage and illustrated just how unprepared municipal water systems are to combat the sorts of large-scale urban wildfires that have become more frequent with climate change.