Left photo: Mobile food delivery person. © Artavazd Hakobayan/World Bank. Right photo: Moscow metro map. © news.metro.ru From meal orders to grocery delivery, the online market for food is growing…

Ingrid Katrina Korsgard, Artavazd Hakobyan |

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 |