 By farming cells, we could actually proactively envision agriculture for a climate-changed world. We could theoretically grow anything that might come from plants or animals from cells instead. Vanilla doesn't have to be rainforest farmed. Egg whites don't have to come with a yolk. Foie gras can be completely cruelty-free. And leather and silk don't have to come off the back of an animal or the home of a silkworm.