What's the difference between mist and fog?

It's a foggy/misty morning here in Christchurch and as I was leaving the house I noticed that I had described it as a "Misty morning" whereas Liz has used the word 'fog'. So, what's the difference?

(It's such questions that the Interweb/Googley-knowledge-finder was built to answer)


Popular articles

The Difference Between One Million And One Billion

Call 159 To Stop Phone Scams

Mayor 1883

Reflections In Blue

NO! The Greatest Story: Space Worm