Milwaukee's got a knack for putting waste to good use. Consider Milorganite or, less obviously to those of us up here on the surface, the city steam system. Follow Bobby Tanzilo as he goes down into ...

Naked light bulbs hang every few feet along a winding, damp, seemingly never-ending passageway. Large heated pipes run the length of the tunnel, and the atmosphere is sweltering. A musty, unpleasant ...