Architectural Lighting Design Podcast

This episode explores the hidden costs of artificial light at night on nocturnal animals. Drawing on recent studies, we examine how urban illumination disrupts the survival and development of insects, alters the feeding and movement patterns of bats, and reshapes the behavior of rodents. From light intensity to spectral composition, we unpack the science behind these disruptions and discuss why protecting darkness is becoming essential for biodiversity in our cities.

This episode unpacks one of the most persistent misconceptions in lighting design: the belief that a higher Color Rendering Index (CRI) automatically means better light. We explore how CRI is a measure of fidelity—how closely colors appear compared to a reference—but not necessarily of human preference or beauty. From the warm glow of candlelight, which has a low CRI yet is universally admired, to modern studies showing that people often favor light that enhances saturation even at the expense of fidelity, we question the supremacy of CRI. The discussion also introduces TM-30, a more nuanced set of metrics, and considers how designers can balance fidelity and preference to create lighting that is not only accurate, but also emotionally compelling.

This episode explores the growing challenges posed by aging LED lighting systems as warranties expire and failures become widespread. The discussion examines how the lack of standardization and replaceable components makes maintenance increasingly difficult, particularly as fluorescent lighting disappears from the market. Listeners will hear about the hidden costs, extensive waste, and performance issues such as flicker in tubular LED lamps that contradict marketing claims. The conversation also calls for greater social responsibility from manufacturers, alongside stronger demand from specifiers and end-users for solutions that are maintainable, repairable, and truly sustainable.

In our new series, we turn from the pioneers of the past to the challenges of the present. This first episode explores overillumination—the excess of artificial light in our cities and homes. Once a symbol of progress and safety, brightness has become so abundant that it reshapes our nights, our health, and our relationship to darkness itself.We trace the history of how society came to equate light with security and success, then look at the scientific evidence showing how “too much light at the wrong time” disrupts our sleep, hormones, and even long-term health. From the glow of urban skylines to the LEDs glowing on our bedside tables, we ask: How bright is too bright?This episode invites listeners to rethink illumination—not as a race for more lumens, but as a balance between light and shadow, visibility and rest, day and night.