Most drivers treat fog as a visibility problem. You slow down, switch on the headlights, and wait for it to thin out. Add ...

Add Yahoo as a preferred source to see more of our stories on Google. Redding is spending its mornings with its head in the clouds — literally. While the Shasta County valley usually gets a few foggy ...

A massive fog bank that has been blanketing much of California's Central Valley with low-lying clouds since Thanksgiving time has prompted fears online of a mysterious and harmful "radiation fog," but ...