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 |

Mbarak Mbigo helps his colleagues who are software developers at Andela, in Nairobi, Kenya. © Dominic Chavez/IFC We only have to look at the way we communicate, shop, travel, work and entertain…

Ceyla Pazarbasioglu, Jose Luis Irigoyen, Atul Mehta |