Food as you know it is about to change
David Wallace-Wells writes: From the vantage of the American supermarket aisle, the modern food system looks like a kind of miracle. Everything has been carefully cultivated for taste and convenience — even those foods billed as organic or heirloom — and produce regarded as exotic luxuries just a few generations ago now seems more like staples, available on demand: avocados, mangoes, out-of-season blueberries imported from Uruguay. But the supermarket is also increasingly a diorama of the fragility of a system…