The Atlantic | A year ago I sat in a room at the Earth Institute at Columbia surrounded by executives from big food companies. One of them, I believe from Unilever, clicked to a slide that read "The solution to global hunger is to turn malnutrition into a market opportunity." The audience—global development practitioners and academics and other executives—nodded and dutifully wrote it down in their notebooks; I shuddered. The experience stayed with me and I haven't gotten over it. Last