Air-Purifying Billboard
![Air-Purifying Billboard](https://images.squarespace-cdn.com/content/v1/5102c9cce4b0ef23f0dcf6a8/1402396976519-O64AF8TX6UIBGMKZ508F/air-purifier-billboard.jpg)
Following the success of last year Potable Water Generator, the Peruvian University of Engineering and Technology (UTEC) used their self-promoting billboards to do good.
![](https://images.squarespace-cdn.com/content/v2/namespaces/memberAccountAvatars/libraries/5102c9cce4b0ef23f0dcf6aa/762cdc638a394852a291711fc6fc600e/762cdc638a394852a291711fc6fc600e.jpeg?format=300w)
Dani Comar
Creative Consultant and Workshop Facilitator