Mountains and Valleys

Why are my glasses always dirty? I clean them and put them on and within 5 minutes they are filthy once again. Sometimes it seems like they can be clean and as I move them onto my face they pick up some sort film from the very air.

Now you might think that I am some sort of filthy guy but its not like that. I blame global warming. I don't know how but that is to blame.

I guess this has nothing to do with the photograph.