Tue April 22, 2014
With urbanization on the rise, the need for green cities and urban waste and water management is essential
By :Alice Urban
For the first time ever, more than half of the earth’s population lives in cities. In the early 19th century, only two in 10 people lived in urban areas. By 1990, that number rose to about four in ten, says the World Health Organization.
And by 2050, seven out of 10 people will live in a city.