What's Making California’s Wildfires So Dangerous?

The Southern California wildfires spreading through Ventura and Los Angeles counties are among the devastating wildfires residential communities have seen in the decades since developers have expanded further and further onto land prone to natural disaster.

But in several ways California's fires are unusual. They come late in the year when weather conditions typically stifle potential fires and some have sprouted up in the middle of dense urban areas typically far from fire zones.