According to the latest available purchasing power parity (PPP) data, China’s gross domestic product (GDP) in PPP terms overtook the USA’s in 2013, and now accounts for nearly 19% of the global…

Edie Purdie |

As the world urbanizes rapidly, [[tweetable]]international experience has shown that economic activities concentrate in a relatively small number of places[[/tweetable]] – it is estimated that…

Sameh Wahba, Judy Zheng Jia |