In many places around the world, fresh and safe drinking water is hard to come by. But some engineering students in Peru have teamed up with an advertising agency to create a billboard that turns the nation’s humid climate into water that is so desperately needed.

The University of Engineering and Technology (UTEC) teamed up with Mayo Publicity to capture moisture from the air and convert it into filtered drinking water. Check out this video showing how it’s done:

Lima receives almost no rainfall, but humidity is around 98 percent. This single billboard is capable of capturing 9,450 liters every three months to quench the thirst of hundreds of families. Imagine what would happen if hundreds of these billboards were put up around that nation? And what would happen if this idea catches on around the world?


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