The Cycle of Light & Dark: A Scientific & Spiritual Exploration of Sleep, Part 2 episode artwork

EPISODE · Jun 18, 2026 · 1H 12M

The Cycle of Light & Dark: A Scientific & Spiritual Exploration of Sleep, Part 2

from The CyberSangha Podcast · host CyberSangha

Episode 70 · Series 4 — 2024 CyberSangha Dialogues With Ed O’Malley, Ph.D., and Geshe Tenzin Wangyal How do the light of day and darkness of night impact our experience as human beings, including the quality of our sleep? What is light, from the perspectives of both modern science and ancient Tibetan wisdom? Ed O’Malley and Tenzin Wangyal Rinpoche explore the implications not only of sunlight, but also of the clear light of awareness and the five pure lights described in the dzogchen teachings of Tibet. Join us for a fascinating inquiry into our universe of light and dark. Related: “Sleeping, Dreaming & Well-Being: a Scientific & Spiritual Exploration of Sleep, Part 1” with Danny Lewin, Ph.D., and host Geshe Tenzin Wangyal. Learn more & view recording. Post-broadcast summary: Ed O’Malley discussed the importance of circadian rhythms and light on human sleep patterns, emphasizing the negative effects of light pollution and the benefits of natural daylight. He underscored the role of healthy sleep patterns for overall health and longevity, citing recent research to support this claim. Lastly, he and Rinpoche explored the interconnection between inner and outer light, traditional practices that integrate the two, and the cultural significance of circadian rhythms.

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The Cycle of Light & Dark: A Scientific & Spiritual Exploration of Sleep, Part 2

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