There are lots of ways to cool large spaces passively if the air is hot and dry. Your options are much more limited if the air is hot and humid. That's why most

There are lots of ways to cool large spaces passively if the air is hot and dry. Your options are much more limited if the air is hot and humid. That's why most of these innovations come from places with arid climates such as Egypt, Zimbabwe, and (parts of) California, and practically none from Japan or Singapore.