Imagine living in Lima - a city located in a part of Peru so dry it receives less than 1 inch of rainfall a year.
Yet, tantalisingly, the the humid air above you is full of moisture, if only you could get it.
The University of Engineering and Technology of Peru, in an attempt to encourage young people to pursue engineering careers, have come up with a cool idea.
A simple reverse-osmosis condenser in a billboard-sized structure has been constructed and delivers pure drinking water into 20-litre tanks.
Here is the original article.