An information article that discusses a key technology development in the first part of the Twentieth Century with repercussions felt around the globe. A boon to business and urbanism, but a bane to humanity’s prospects for long-term survival. We already generate and use an absolutely insane, unsustainable amount of unnatural energy that is wreaking havoc on the Earth’s biosphere. The widespread use of air conditioning worldwide only aggravates this colossal change.