The agri-food system has undergone major transformations in the last hundred years. In the case of Spain, we have moved from a food system based on local resources and renewable energies, such as solar energy and organic matter, to another model dependent on external inputs, such as fossil fuels and minerals. This change of model took place from the second half of the twentieth century, due, among other reasons, to the outbreak of the Green Revolution, which expanded the use of improved seeds and varieties, together with pesticides, synthetic fertilizers and feed for the…<\/p>\n