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Sunlight Matters
Welcome to Sunlight Matters, the podcast that illuminates the incredible power of the sun and its impact on our health, well-being, and way of life.
From its essential role in vitamin D production and mental health to its influence on architecture, urban planning, and sustainability, the sun shapes our world in ways we’re only beginning to understand.
In each episode, podcast host Dave Wallace will chat with experts—from scientists and health professionals to designers and outdoor enthusiasts—to explore why sunlight isn’t just a backdrop to our lives but a force that shapes everything we do. So step into the light because here, Sunlight Matters.
Photo of Sun @Andrew McCarthy Cosmicbackground.io
Episodes
35 episodes
The Light Effect: Sunlight, Depression, Mental Health and Jet Lag
In this episode of Sunlight Matters, Dave speaks with Professor Sean Cain, a leading researcher in circadian rhythms, light and mental health. His research points to a striking pattern: brighter days are associated with a lower risk of...
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Sunlight, Mental Health and the Magic of Morning with Kristen Gilbert
What if sunlight is one of the most overlooked influences on our mental health?In this episode of Sunlight Matters, Dave speaks with Kristen, a registered occupational therapist, trauma practitioner and quantum biology health co...
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Built for the Sun
What if better health begins not with another device, supplement or complicated routine, but with something far more fundamental: reconnecting with nature?In this episode of Sunlight Matters, Dave Wallace speaks with Nathan Sil...
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Sunrise Challenge
Hunting the Sunrise: What Happens When You Live by the Sun?Most of us instinctively believe we know the difference between indoors and outdoors. But while a typical indoor space might provide 300 lux of light, even an overcast sky can ex...
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Shooting the Sun: Andrew McCarthy on Astrophotography, Icarus and the Artemis Moonde
If you've ever seen a photo of the Sun that stopped you in your tracks, there's a very good chance Andrew McCarthy took it. His image of our star is the first thing you see when you open the Shadowmap story, and it's the artwork behind Sunlight...
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In Defense of Sunlight with Rowan Jacobsen
What if sunlight isn't the enemy we've been told it is? In this episode of Sunlight Matters, science writer Rowan Jacobsen discusses his new book, In Defence of Sunlight, and explores the growing body of research linkin...
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Real Estate & Why Sunlight Matters in Property Search
In this episode of Sunlight Matters, Dave is joined by product leader Dave Masters, former product executive at Realtor.com, to explore the future of real estate search, consumer behavior, and why sunlight data could become an e...
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Editing the Sun — How Indoor Light Lost Touch With Biology
In this fascinating and deeply thought-provoking episode of Sunlight Matters, Dave Wallace sits down with four leading thinkers from radically different disciplines to explore a provocative new scientific theory.The discussion c...
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The Sun Has a Score — Introducing Sunscore from Shadowmap
Sunlight Matters PodcastEpisode: In this special episode of Sunlight Matters, David Wallace sits down with Shadowmap founder and CEO Georg Molzer to reflect on the journey behind Shadowmap, humanity’s relationship ...
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Sensing Light with Lys Technologies
In this episode, our guest is Christina Friis Blach, co-founder of Lys Technologies, about how light shapes our health, performance, and daily lives.They explore how sunlight exposure and circadian rhythms influence sleep, hormone...
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Sunlight, Health & Rethinking Modern Medicine
In this thought-provoking episode, we sit down with Jonathan Jarecki, a 20-year-old pre-med student exploring the frontier of light biology, mitochondrial function, and the hidden impact of our modern indoor lifestyle.What begins ...
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Sunlight Matters LIVE from Alicante: Light, Life & the Power of Solar Exposure
In this special in-person episode of Sunlight Matters, recorded on a sun-drenched rooftop terrace in Alicante, Dave and Georg are joined by daylight expert Paul Rogers to explore the profound relationship between sunlight, architecture...
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How Light, Nutrition & Circadian Health Transformed a Pro Fighter
From Fight Camp to Sunlight: In this episode of Sunlight Matters, guest host George Alexander speaks with professional kickboxer and osteopath Nathan, currently ranked #1 heavyweight in the UK for Muay Thai and #2 f...
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Lightspiracy: The Hidden Politics of Modern Lighting with Anna Levin
Was the global ban on incandescent light bulbs really a climate breakthrough — or did we rush into a lighting revolution without fully understanding the biological and environmental consequences?In this episode, Dave speaks with journali...
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Light, Life Energy & Breatharianism – Rethinking Science with P.A. Straubinger
What if the human body isn’t powered by calories alone?In this thought-provoking episode, we sit down with Austrian filmmaker P.A. Straubinger, creator of the groundbreaking documentary In the Beginning There Was Light, t...
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Is glass in our windows making us sick with Joe Menchefski
Glass, Sunlight & Human HealthIn the first episode of Series 2, we’re joined by daylighting expert and chemical engineer Joe Menchefski to explore a critical but often overlooked topic in modern building design: glass.W...
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How LED Lighting Is Harming Humans With Professor Glen Jeffery
In this insightful podcast discussion, friend of the podcast, Professor Glen Jeffery, sheds light on his recent study published in Nature (https://www.nature.com/articles/s41598-026-35389-6)IntroductionIn a world dominated by ...
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Cities of Light, Cities of Shadow
In this episode of Sunlight Matters, Dave sits down with the brilliant Paula Longato—architect, daylight consultant, and lighting designer—to explore why daylight access and sunlight analysis are critical yet often overlook...
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💡 Light, Health & the Built Environment: Ulysse Dormoy on the Real Cost of Indoor Living
Dave sits down with Ulysse Dormoy, CEO of Atrium Ltd, to explore a subject hiding in plain sight: the light we live under every day — and how it’s quietly impacting our health, performance, and wellbeing 🌞🏙️What starts as a...
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The Sun
What if everything you thought you knew about sunlight was just scratching the surface? ☀️🔬In this illuminating episode of Sunlight Matters, hosts Dave and Georg sit down with world-renowned astrophysicist Dr. Bob Fosbury...
Surviving Winter with Sunlight – A Conversation on Light, Health, and Infrared Science with Glen Jeffery, Bob Fosbury and Scott Zimmerman
In this companion episode to the Roger Seheult episode, Dave is joined by three experts—Prof. Glen Jeffery, Scott Zimmerman, and Dr. Bob Fosbury—to explore how sunlight and infrared light influence human health, particularly in the darke...
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Surviving Winter. You don't need to be SAD with Dr Roger Seheult
As winter approaches in the North, the days get shorter, the skies darker, and for many of us, our energy, mood, and health start to dip. In Part 1 of a 2-part special of Sunlight Matters, Dr Roger Seheult joins Dave and Georg to share...
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Light, Rights & Urban Fights: Daylight in a Densifying World
In this thought-provoking episode of Sunlight Matters, we travel across Europe to explore how daylight access, sunlight rights, and urban densification intersect—and often clash.Joining us are three brilliant ...
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