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.

Questions are emerging about fire hydrants in Southern California that may have run dry. CBS News Confirmed's Melissa Mahtani breaks down the claims and what's known about the hydrants.

Though wildfires have always happened, warming global temperatures are making them more frequent and severe. For instance, scientists calculated last year that our overheating planet has contributed to a 172% increase in areas burned by wildfires in California since the 1970s.

When fire hydrants ran dry during the Pacific Palisades fire, it sparked a wave of anger and even misinformation. Here’s how L.A.’s water system works and what we know about why the hydrants ran out.

Martin Adams, former general manager of the Los Angeles Department of Water and Power, blows up some right-wing myths about the water supply in Pacific Palisades, and talks with Alex Wagner about the realities of municipal water systems and ideas for adapting a system built for occasional residential fires to deal with a large scale,