Yeah we have that too, but this is about evaporating it to make the air healthy to breathe. Different benefits compared to drinking. Here's more about the mech

Yeah we have that too, but this is about evaporating it to make the air healthy to breathe. Different benefits compared to drinking. Here's more about the mechanism: https://en.wikipedia.org/wiki/Graduation_tower https://en.wikipedia.org/wiki/Graduation_tower Apparently the first such towers were built in 1600s.