Security and the Soil

In Pakistan's chaotic North-West Frontier Province, there's a movement afoot to temporarily ban the sale of fertilizers containing ammonium nitrate, which are frequently used in bombmaking. (The article mistakenly fingers urea fertilizers as the target of the ban.) This got us thinking about the reasons for ammonium nitrate's continued popularity among the world's farmers, despite the chemical's lethal history. We actually tackled this conundrum for Slate some years back, and found that it...