These Are the World’s Most Liveable Cities

City liveability is important on various levels and impacts the daily lives of billions of people. Over 80% of global GDP is generated in cities, while consuming nearly 80% of the world's energy and producing more than 60% of its greenhouse gas (GHG) emissions. Therefore, building liveable, future-ready and sustainable cities is critical. ranks the liveability of global cities based on more than 30 qualitative and quantitative factors across five categories. Their rating methodology, which is criticized for the nature of the data and how it's collected, combines expert analysts and takes into account external data points.