Many cities put a special emphasis on the “relocalisation” of food, in other words: in bringing back food production closer to cities. A recent article from Adrien Baysse-Lainé (Université Lumière Lyon 2/INRA) and Coline Perrin (INRA) shows that it is not only the number of hectares of land that is relocalised that counts. Cities also need to take into account the quality of that land. More widely, they need to familiarize themselves more with the farming sector in order to provide suitable conditions for farms to come back close to the cities.