Wildfire smoke has caused a spike in related emergency room visits. Here are the cities worst affected by blazes in recent years.

The highly dangerous wildfire is raging across Malibu, forcing 20,000 residents to flee as flames have now scorched over 3,000 acres.

On Tuesday, the zone was expanded toward the west, covering 20 square miles. Pacific Coast Highway (Highway 1) was closed in the area of the fire. The map above shows the mandatory evacuation area ...