An invention worth noting

I just found a link I had saved but, it would seem, never posted.  From 2013, in Slate, a short history of airconditioning.   It's a pretty hot weekend where I am in Brisbane, so it's topical.

The first modern, properly air conditioned building was apparently this:

It was introduced to the public on Memorial Day weekend, 1925, when it debuted at the Rivoli Theater in Times Square. For years afterward, people piled into air-conditioned movie theaters on hot summer days, giving rise to the summer blockbuster.   

So modern aircon is less than 100 years old.  Huh.