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How St. Louis is tied to the hot and cold past of the air conditioner

The Missouri State Building at the 1904 World’s Fair in St. Louis. The St. Louis Republic reported at the time: “Entrance into the Missouri building from the glaring heat outside will be instantly followed by the most delightful relief from the oppressive weather encountered in promenading the grounds.”
Missouri History Museum / Public Domain
The Missouri State Building at the 1904 World’s Fair in St. Louis. The St. Louis Republic reported at the time: “Entrance into the Missouri building from the glaring heat outside will be instantly followed by the most delightful relief from the oppressive weather encountered in promenading the grounds.”

Editor's note: This story was originally published by .

In the Northeast and some part of the Midwest, the leaves have started changing colors, heralding the season of pumpkins, sweaters, and the smell of woodsmoke. But in some parts of the country, the heat hasn’t let up. In cities like Dallas, Phoenix, and Miami, temperatures were up in the high 80s and low 90s this week—and with climate change, the U.S. is only getting hotter.

But humans have come up with an ingenious way to keep the heat at bay: air conditioning.

Widely considered one of the , the technology has transformed how and where people live—and it’s prevented countless deaths. But it comes at a cost, and if we’re going to keep up with a warming climate, we’re going to need some other tricks to stay cool.

Hear how the history of air conditioning is explicitly tied to St. Louis history
On the facade of the office building there are white air conditioners at the Windows. Concept of indoor climate and air circulation

Further Reading

  • Read Salvatore Basile’s book on the history of air conditioning, .
  • Check out Gail Cooper’s book, .
  • Read a turn-of-the-century engineer’s report on  installation at the World’s Fair in St. Louis, published in the Journal of Ice and Refrigeration.
  • Find more information on .
  • A study about 
  • A look back at the  from the St. Louis Post-Dispatch
  • Find out    between neighborhoods, corresponding to differences in racial demographics and wealth. (Take a look at these . cities and some of the !)
  • Find further details on the materials that 

This story was produced by , in collaboration with © 2024 ’s . We had production help from . All of our music and sound design is by . We had research and fact-checking help from . Charles Bergquist was the voice of refrigeration engineers from 1904.

Special thanks to , professor at the University of Illinois and director of , for explaining to us how air conditioners work; , assistant professor of architecture at McGill; , lecturer in geography, urban planning and environment at the University of Wolverhampton; , professor at the University of Virginia School of Medicine; and Adam Kloppe, a public historian with the Missouri Historical Society.

Shahla Farzan is a PhD ecologist and science podcast editor at American Public Media. She was previously a reporter at © 2024 .