Why not join me in posting very interesting photos of things of interest? This is the last known photo of the Titanic off of Ireland
The smog in Los Angeles, when I was growing up. Around the early 70s, a study came out showing that just living in the San Fernando Valley, was like smoking a pack of cigarettes a day. I remember many days when we couldn't go outside because the air was too dangerous. Things have dramatically improved since then; so much so that they had to rescale the air quality system.
That is one reason why I never was tempted to live in that part of CA. Terrible day (very rare) in San Francisco