Extracting water from the air isn't an entirely new idea. Decades ago, universities in Peru and Chile developed techniques to condense the water contained in the common clouds off the cold Pacific coast. But what Kumulus—a startup founded by a group of Tunisian engineers whose mission is to provide drinking water in an economical and sustainable way—goes a step further technologically. The company has designed a device capable of producing between 20 and 30 liters of drinking water per day from the air. The Kumulus-1, defined as an atmospheric water generator (AWG), is a machine that can be installed in a space of 1 square meter and features a solar power system that makes it self-sufficient. 

The process works as follows: air enters the machine and passes through a first filter, which removes contaminants. Then, as the air cools, the water it contains condenses on the surfaces inside the machine, from where it can be collected in a water tank. Basically, it replicates the phenomenon of morning dew.

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