This is an excellent talk from architect Carolyn Steel, who addresses the question of where our food comes from and how we manage to feed ourselves in cities. It points to the fragility of contemporary logistics and supply chains.
From the talk description:
“The question of how to feed cities may be one of the biggest contemporary questions, yet it’s never asked: we take for granted that if we walk into a store or a restaurant, food will be there, magically coming from somewhere. Yet, think of it this way: just in London, every single day, 30 million meals must be provided. Without a reliable food supply, even the most modern city would collapse quickly. And most people today eat food of whose provenance they are unaware.”