Adding to the aggravation, some communities close to the fires also have been under boil-water notices, including areas near the Eaton fire in the Altadena area, the 90272 ZIP Code in Pacific Palisades and the area north of San Vicente Boulevard in Los Angeles.

She was able to track who was opening the guide based on ZIP Code data and said 700 people in Pico-Robertson used it.

To get around these problems, the scientists developed a "molecular GPS" for immune cells that guided them with a "zip code" for the brain and a "street address" for the tumor.

They found the ideal molecular zip code in a protein called brevican, which helps to form the jelly-like structure of the brain, and only appears there.

"People relate to their own zip code, their local environment where their family and friends live. Providing local climate simulations becomes intuitive, personal, and relatable."