Engineers have come up with an absolute best way to utilize the space of a billboard.
All over the world, we have humans drinking unsafe water to survive. In some places, rain is almost non-existent. However, there is humidity galore. So, engineers of UTEC and the people in Lima, Peru got together and created a billboard that actually generates clean drinking water from the air. This will prevent the life threatening conditions of drinking unsafe water for this town.
The video below explains it very well. My hats off to these guys. Now they need to go out and multiply this hardworking billboard everywhere!