Authors:

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.

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