Passive Cooling

Passive Cooling

October 29, 2025 · 25 min · Season 2 · Episode 9

About this episode

This episode discusses passive cooling and its benefits in energy conservation through natural temperature differences.

On this podcast, we spend a lot of time talking about electricity — how to generate it, store it, and use less of it. But the truth is, the bigger share of our energy use often goes to heating and cooling — the invisible comfort systems that keep us alive in the places we choose to live. Humans are unusual that way. Most species adapt to their environment. We do the opposite — we adapt the environment to suit us. It's how we survive in deserts and tundra, in glass towers and remote villages. Today on the show, we're talking about passive cooling. We bring you three stories of designs that take advantage of natural temperature differences instead of using up a bunch of energy just to make something cold. People: Cloud Tsuma, guide with Sunway Safaris Places: South Africa; Doha, Qatar; Paris, France Technology/Concepts: passive cooling, termite mounds, qanat, outdoor air conditioning, evaporative cooling, district cooling Closing the Gap is hosted by Gwen Holdmann. Tony Williams is our producer and engineer. Jennifer Pemberton is our writer and editor. Music is from Blue Dot Sessions.

People in this episode

Host: Gwen Holdmann

Guest: Cloud Tsuma

Topics covered

Keywords

Mentioned in this episode

Organizations: Sunway Safaris

Places: South Africa, Doha, Qatar, Paris, France

More episodes of Closing the Gap with Gwen Holdmann

Explore listener stats, chart rankings, contacts and more on the Closing the Gap with Gwen Holdmann podcast page.