# Western Slope Skies - Circadian Rhythm Part 5: Living Systems

Page: https://stenobird.com/podcast/western-slope-skies-60132/western-slope-skies-circadian-rhythm-part-5-living-systems
Text version: https://stenobird.com/podcast/western-slope-skies-60132/western-slope-skies-circadian-rhythm-part-5-living-systems.md
Podcast: [Western Slope Skies](https://stenobird.com/podcast/western-slope-skies-60132)
Published: 2026-07-17T16:11:00+00:00
Episode link: https://www.kvnf.org/show/western-slope-skies/2026-07-17/western-slope-skies-circadian-rhythm-part-5-living-systems
Audio file: https://cpa.ds.npr.org/s752/audio/2026/06/westsky-0717.mp3
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JSON: https://stenobird.com/v1/public/podcasts/western-slope-skies-60132/episodes/western-slope-skies-circadian-rhythm-part-5-living-systems
Duration seconds: 256

## Resource

Here's where evolutionary biology meets modern medicine. Our ancestors lived with natural light-dark cycles for millions of years. Industrial lighting, shift work, and digital screens represent a 150-year-old experiment—an evolutionary eyeblink. Our Paleolithic circadian systems now face unprecedented challenges.

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## Transcript

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