How do you eat when you have no home? Nowhere to store food, nowhere to cook, no table to eat at? In this episode we are with homeless people in two of the world’s most prosperous cities - London and Los Angeles - to talk about how they feed themselves. This is a tale of two cities - a surprising story perhaps of the abundance of food in the most deprived parts of society. What does it tell us about our global food supply chain? (Photo: Homeless man looks out on LA and London streets. Credit: BBC/Getty Images)