No matter how badly senators want to know things, judicial nominees are limited in what they may discuss. That limitation is real, and it comes from the very nature of what judges do.			
				
			The air that people breathe in many Chinese cities has become dangerously polluted. Their food supply is subject to constant contamination scandals. Now it appears that not merely stagnant ponds but the water people draw from deep underground is already tainted.			 
			

 
