@PUBLICEGGO

San Francisco is not Berkeley.

I can't help but wonder if their neighbors haven't caused the problem. That site is quite near a rather large steel plant, which has come under a lot of scrutiny for its emissions.

Just read a fascinating book full of similar cool pictures: Infrastructure, by Brian Hayes. http://www.amazon.com/Infrastructure-Field-Guide-Industrial-Landscape/dp/0393329593/ref=pd_bbs_sr_1?ie=UTF8&s;=books&qid;=1204346044&sr;=8-1