The root cause of hunger and famine is rarely crop failure alone. It is about who controls and benefits from the land and its resources. About 1 billion people, or one in six of the global population, go hungry today, even though more food is being produced than ever. And yet, around the same number of people are overweight or obese and likely to have their lives cut short by diet-related disease. We have, in other words, a food system that is failing.