Editorial credit: alionabirukova / Shutterstock.com Last week, the world came to attention when the famous Hulene dumpsite in Maputo, Mozambique collapsed under heavy rains, killing at least 16...

Silpa Kaza, Lisa Yao |

[[tweetable]]How fast is your city growing? The answer may depend on where you live.[[/tweetable]] There are the booming megacities such as Tokyo, Mumbai, and Nairobi. Then there are cities that...

Ede Ijjasz-Vasquez, Paula Restrepo Cadavid |