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 |

Old City of Dubrovnik, a UNESCO World Heritage Site in Croatia. (Photo: Justin Smith / Flickr CC) Today, we celebrate the International Day for Monuments and Sites. This year, the day focuses on…

Ede Ijjasz-Vasquez, Francesco Bandarin |