The global economy will probably triple in size in the next quarter-century, largely owing to growth in developing countries as they catch up to developed-country incomes and adopt similar consumption patterns. Thus, there is a well-founded fear that the planet’s natural resources (broadly defined) and recuperative capacities will not withstand the pressure.
对许多人来说，可持续性伴随着有限的自然资源和环境。在未来25年中，全球经济规模可能会翻三倍，主要的增长动力来自发展中国家，它们将赶超发达国家的收入水平，并采用和发达国家相似的消费模式。因此，人们开始担心，地球的（广义）自然资源和自我修复能力将不堪重负。