Mist is good--it means the ground is warming up

Mist is good--it means the ground is warming up, a photo by woodsrun on Flickr.

I like this picture--it was a dramatic scene, veryk pretty. When I lived in southern New England we had mist & fog all the time and I got used to it. Now we rarely have it and it feels like a real treat. I wonder what the difference is between mist and fog...