On my way to work this morning I passed an amazing sight: a fountain of water shooting 50 feet into the air. A fire hydrant had come off (I wish I'd seen that bit) and the water from the main was spouting to the sky. I've often been vaguely impressed with the concept of water pressure in cities - it just comes out the faucet! What is pushing it? You used to have to pump water to get it Up to where you want it. This sight really brings that home, the massive pressures running underneath the streets in modern cities. It's highly impressive. When I first arrived there was simply the waterspout, but fire trucks and firemen arrived very shortly and started playing around in the water. One almost had his hat knocked off by it. It wasn't clear what they were doing in there, and I don't know how they were planning to get it under control again. The grocery store on the corner lost its awnings from the weight of water falling on them.