From 1980 to 2005, the weight of the materials used to produce a dollar of GDP fell about 30 percent on a worldwide basis, or 1.2 percent a year. Because output grew more, there was a 45 percent increase in materials use overall.

A first assessment, based on international data, indicates that humanity is falling far below the social foundation on eight dimensions for which comparable indicators are available.

Le Donut nous offre une boussole pour le XXIe siècle, mais comment savoir si nous pouvons ou non entrer dans son espace juste et sûr ? Cinq facteurs jouent un rôle clé : la population, la répartition, l’aspiration, la technologie et la gouvernance.