Balls by the bushel

The journal Nature Sustainability has published a paper which argues that air ‘pollution’ due to the cultivation of maize “causes 4,300 deaths annually. More than 70% of those deaths stem from farms’ use of nitrogen-based fertilizers, which emit ammonia that is converted to a deadly type of pollutant called fine particulate matter”, at a cost of $39 billion, a figure calculated on the basis of $9 million for each death avoided.

$9 million/person…is any American worth that much?