It's July 17th. This day in 1902, a New York engineer by the name of Willis Haviland Carrier is trying to figure out a system for keeping printing machinery cool -- and ends up developing the technology that would lead to air conditioning.

Jody, Niki, and Kellie discuss how quickly Carrier's invention spread, and how air conditioning changed everything from urban development to political productivity.

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Our team: Jacob Feldman, Researcher/Producer; Brittani Brown, Producer; Khawla Nakua, Transcripts; music by Teen Daze and Blue Dot Sessions; Audrey Mardavich is our Executive Producer at Radiotopia

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