The 20th century was one of voracity, the 21st century will be one of hunger. Elsewhere, of course, in Africa, but also in the West, right here. Depletion of fossil fuels and minerals, climate change, loss of arable land, soil degradation, freshwater scarcity, ocean depletion, overpopulation, agricultural crisis: all these factors contribute to hunger and its dramatic consequences. Decades of casual expansion now leave us only a tiny strait to cross to avoid collapse and allow us to emerge from the fossil era without irreparable damage. Hugues Stoeckel convinces us, without complacency and with many examples, of the reality of the danger, to better show us the glimmer of hope. Hugues Stoeckel est ecologiste militant depuis les annees soixante-dix (membre des Verts, d Attac et d Alsace Nature). Ancien conseiller regional d Alsace (1992-2004), il est conseiller municipal dans son village des Vosges du Nord. Yves Cochet est chercheur et mathematicien. Ancien porte-parole des Verts (1984-1986), depute europeen (1989), depute du Val-d Oise (1997), ministre de l Amenagement du territoire et de l Environnement (2001-2002), il est aujourd hui depute vert du 14e arrondissement de Paris.