I ADMIT I am an occasional fan of "potty humor," at least to the extent that I enjoy the series "South Park" featuring four foul-mouthed little boys. But in many parts of the world, potties are no joke but rather literally a matter of life and death. Over 2.4 billion people, or 40 percent of the world's population, lack proper sanitation. As a result, diarrhea alone kills about three million children under the age of five each year. Horrible parasites add to the butcher's bill. But supposedly the last idea we should be considering for these poor folks are the...
