> What's an inversion? Short for "thermal inversion", at least here. Happens in the winter here, where you get a layer of cold air trapping in a layer of warmer air. The air stagnates, and as a result pollution levels climb. Since we live in a natural basin (Phoenix) and have little rain, the sky starts to look very LA'ish. I thought San Diego got enough wind to disturb this, but clearly, I'm wrong. -Jot -- Jot Powers <books at bofh.com> http://www.bofh.com/books/ "I'm upping my standards, so up yours!" -Pat Paulsen (1927-1997), Presidential Campaign Slogan