Compact, well-connected cities that feature efficient public transportation systems – cities like Barcelona – are healthier and more sustainable. Moreover, the Global Commission on the Economy and Climate estimates that such cities could reduce capital requirements for urban infrastructure by more than $3 trillion over the next 15 years.
像巴塞罗那这样紧凑、四通八达且拥有高效公交系统的城市更可持续、也更加健康。此外，全球经济和气候委员会估计这样的城市可以在今后15年减少对城市基础建设的资金需求超过3万亿。