Column due today. Toil, toil, toil. Something on groundwater. Seemed like a hell of an idea when I pitched it to my long-suffering editor. Early this morning I sat in the dark, drinking coffee, wondering what could be written about aquifers that anyone but a masochist might want to read. A few sips into cup number four, the great Charles Bowden came to mind. Now the question is "What's left to say that Bowden didn't say perfectly and beautifully?" Then again, it helps to know what's possible.