Color photographs taken 100 years ago.

Look at the beatiful sky. What have we done to our own world..
http://www.loc.gov/exhibits/empire/images/p87-6040.jpg
http://www.loc.gov/exhibits/empire/images/p87_32x__00023_.jpg
http://www.loc.gov/exhibits/empire/images/p87-8052.jpg
http://www.loc.gov/exhibits/empire/images/p87_5275__01067_.jpg

More pictures here.
http://www.loc.gov/exhibits/empire/

I was told that the people that discovered LA saw smog there before the land was settled.

Anyway, Lewis Black gave a great speech about LA. It isn't meant for human habitation.