It's quite a coincidence that you mention passive cooling. I moved to the Caribbean after high school, and I never once had AC during the 10 years I spent ther

It's quite a coincidence that you mention passive cooling. I moved to the Caribbean after high school, and I never once had AC during the 10 years I spent there. But the windows were always open and the fans were always on. The Caribbean doesn't suffer from the humidity of the Deep South, and there was most always a breeze. It was much more bearable even though the temps were often just as high as those I experienced in Alabama.