Evaporative cooling systems use a fraction of the energy and could be used together with conventional air conditioners to tackle energy demands.
![Oldest air conditioning system in the world could help meet sustainable development goals](https://www.advancedsciencenews.com/wp-content/uploads/2021/12/waterfall.jpg)
Evaporative cooling systems use a fraction of the energy and could be used together with conventional air conditioners to tackle energy demands.