Ammonia Pollution From Farming May Exact Hefty Health Costs

摘要: … An extensive study of the burgeoning hog farm industry in North Carolina, completed in 2003, found that ammonia-related PM 2.5 exacted higher health costs than other farm pollutants. "It was striking," says CM Williams of North Carolina State University in Raleigh, who led the study. Other researchers have calculated that the average US … Some experts are skeptical of those numbers, pointing out that the new air pollution model has not yet been peer-reviewed and that the health effects of various PM 2.5 chemistries are still uncertain. "Ammonia …