Half the world's population will live in urban areas by the end of this year and about 70 percent will be city dwellers by 2050, with cities and towns in Asia and Africa registering the biggest growth, according to this article.
Thought of that, as we flew into Cairo this afternoon. Miles and miles and miles of grey-yellow buildings with almost no signs of any green. 17 million people. Dah. Forgive me not liking cities!
Picture courtesy Wikipedia. Source: The Road Daily