Well, since I can't post in the Zion Commentary thread, I guess I have this to say.
Zion is dead. Or dying, whichever way you look at it. As of this posting, many buildings are already completely rotted to the ground. All of the ore mines have rotted to the ground (Cave ins, perhaps? ), the last oil refinery is almost going to fall, plus the school is going to completely collpase in only a few game days. The rest of the buildings are still in good shape, but they won't last at this rate. The good news? Oh, right.. well, at least there's still a good supply of fuel, and the vehicle plants are going to last quite a while, same with the steel factories.
Of course, I'm fairly sure you all knew this by now.
Apparently the rot setting was set too high?