By Tobias Carroll In an increasingly global economy, conflict in one part of the world can have a substantial effect somewhere else entirely. Agriculture is not immune to this; among the effects of the war in Ukraine is a shortage of the fertilizer that farmers across the world rely on to grow crops. With shortages of fertilizer come reductions in the amount of crops that can be grown, which in turn leads to food shortages. It’s a dilemma without an obvious answer. Except that there might be one that’s a little easier to come by than you might think. A new article at The New York Times explore…