I hope you’re not tired of photos.  Because here’s another one I took this morning of the fire escape winding down the side of Milwaukee’s City Hall.  The only camera I had with me (again) was my iPod Touch, so I hope you can see what I saw – specifically, the way the fire escape intertwines with its own shadow all the way down, creating a lacy, spiraled pattern that resembles the DNA double helix.

DNA structure and bases – from the National Genome Research Institute genome.gov (National Institutes of Health). Via Wikipedia