Agriculture is being singled out for its deleterious impacts on the environment. The current popular target is deforestation, largely for its adverse impact on carbon sinking. Coincidentally, the problem threatens expanded agricultural production in countries like Malaysia and Brazil. Malaysia’s palm oil presents the strongest economic competition to oilseed producers around the world, and Brazil outcompetes in a range of products including soybeans, beef, pork, and poultry.  There are many other adverse contributions to the environment by agriculture. In the soil nutrient category, excess nitrogen is the most harmful. One-third of global food production is made possible through its use. But it also contributes pollutants such a...