Home Podcasts Lights Out Library: Sleep Documentaries
Lights Out Library: Sleep Documentaries

Lights Out Library: Sleep Documentaries

Olimpia Pérez 125 Episodes Oct 11, 2026

Lights Out Library helps you fall asleep with soothing stories across a diverse range of topics: science, history, mythology, astronomy, mystery, art and so much more. It makes it possible to both calm and enrich your mind while you drift into dreamland. The podcast is hosted by Olimpia Pérez and offers ad-free listening and bonus content via Patreon.

Episodes

The World of Bees | Documentary Sleep Story
The World of Bees | Documentary Sleep Story Oct 11, 2026 3431 Tonight, I take you to the wonderful world of bees. I tell you about the most famous social species, the western honey bee, but there are thousands more and not all of them are social. We will also discover solitary species like carpenter bees, mason bees or leafcutter bees. Other species are parasitic brood, like the cuckoo bumblebee. Apart from these, eusocial species live in elaborate societies
What is the Multiverse? Science, Philosophy & Science Fiction Story for Sleep
What is the Multiverse? Science, Philosophy & Science Fiction Story for Sleep Oct 4, 2026 3792 This episode will give you an overview of the concept of multiverse: where does it come from? What are the various meanings and ideas behind that term? I detail different versions of this idea, coming from cosmology such as the "Eternal Inflation Multiverse" and the "Cosmic Landscape Hypothesis" derived from String Theory, quantum mechanics (the "Many-Worlds Interpretation"), and the "Computationa
History of Cosmetics, From Antiquity Down to Our Days
History of Cosmetics, From Antiquity Down to Our Days Sep 27, 2026 4711 Tonight’s episode is a remastered version of one of the first stories ever released on the podcast. The original version covered cosmetics and perfumes; in this new version we expanded the history of cosmetics and left the history of perfumes for a future story. The new material covers the influence of Hollywood and flapper culture, women who helped build the modern beauty industry, dangerous co
History of Castles | Documentary for Sleep
History of Castles | Documentary for Sleep Sep 20, 2026 3669 In this relaxing story, I tell you about the history of castles in Europe, from the first earthworks from the Bronze Age to Roman castra and finally medieval castles. We follow their development from motte & bailey castles to giant fortresses of the 14th century with dungeons, concentric walls, drawbridges, portcullis, machicolations, moats... I also tell you about medieval society and how castl
Historical Mystery Stories: Secrets of the Druids, Lost Cities, Forgotten Gods (Sleep Documentary)
Historical Mystery Stories: Secrets of the Druids, Lost Cities, Forgotten Gods (Sleep Documentary) Sep 13, 2026 11103 As long compilations of episodes that can accompany you for several hours were requested, we put this new one together. This episode consists of three main topics: - Mysteries of Celtic culture, especially the druids: who were they and what was their role in Celtic societies? - A journey to "lost cities", in particular Machu Picchu in Peru and Meroe in Nubia (Sudan) - Forgotten gods of Antiquity
Mission to Mars: Space Travel and Terraformation
Mission to Mars: Space Travel and Terraformation Sep 6, 2026 5279 This episode is a remastered and improved version of one of the first stories ever released on the podcast. This new version includes updated information, as well as very recent results published in July 2026 from MAVEN, the spacecraft that spent more than 11 years studying Mars and the history of its atmosphere. I also talk about AstroRad, a new device tested in deep space that could help protect
History of Alexander the Great | Documentary for Sleep
History of Alexander the Great | Documentary for Sleep Aug 30, 2026 4840 Alexander the Great is a name that sounds almost more legendary than real. In tonight's episode, we will talk about his time, his life and his conquests. Born from King Philip II of Macedon and Olympias of Epirus, educated by Aristotle, Alexander takes the lead of the League of Corinth, a coalition of Greek states. He leads his army into the conquest of the greatest empire of the time: the empire
History of Furniture | Documentary for Sleep
History of Furniture | Documentary for Sleep Aug 23, 2026 4163 In this soft-spoken sleep story, I tell you about the history of furniture from Prehistory to our days, with an emphasis on French styles from the 17th and 18th Centuries (Louis XIV, Louis XV, and Louis XVI style). I also explain a few different techniques, like veneering, marquetry, and ormolu (gilt bronze). This content is entirely scripted and recorded by real people, it includes no AI, and mi
History of Lost Cities: Machu Picchu, Meroë, Mohenjo-Daro (Sleep Story)
History of Lost Cities: Machu Picchu, Meroë, Mohenjo-Daro (Sleep Story) Aug 16, 2026 3598 In this bedtime story, I tell you about three “lost cities” and the civilizations that built them: • Machu Picchu, built as a retreat for Inca emperors 50 miles from their capital, Cusco, and largely forgotten by the outside world for more than 300 years. • Meroë, the capital of the Kingdom of Kush, along with a brief history of Nubia and its relations with Egypt in antiquity. Before Meroë becam
Review of the Periodic Table of Elements (30 to 118), Bedtime Sleepy Science
Review of the Periodic Table of Elements (30 to 118), Bedtime Sleepy Science Aug 9, 2026 4006 In this science talk for bedtime, I review the periodic table of the elements methodically and explain in simple terms plenty of phenomena and concepts about chemistry and physics (for example in this episode: metalloids, alpha and beta decay, Xenon poisoning of nuclear reactors...) as well as the industrial and economic relevance of some of these elements. For tonight, we continue with elements 3
The Bestiary: Dragon, Unicorn, Elf, Mermaid, Phoenix, Werewolf | Sleepy Mythology & History
The Bestiary: Dragon, Unicorn, Elf, Mermaid, Phoenix, Werewolf | Sleepy Mythology & History Aug 2, 2026 11872 As long compilations of episodes that can accompany you for several hours were requested, we put this new one together. Bestiaries were medieval compendiums that contained information and illustrations of real and legendary animals. Following this ancient tradition, we have put together talks about the origins of different legendary and fantasy creatures. Make yourself comfortable, this will be a
Greek Mythology: The Odyssey (Soft-Spoken Sleep Story, Improved Version)
Greek Mythology: The Odyssey (Soft-Spoken Sleep Story, Improved Version) Jul 26, 2026 4540 In this episode, I tell you the story of the Odyssey, and as in previous mythology videos I discuss a few historical and literary aspects. If you want to know about the lotus-eaters, the cyclopes, the sirens, Aeolus, Circe, Scylla and Charybdis, Calypso, and many more things, relax and enjoy the long journey Odysseus will have to endure to be reunited with his wife Penelope and his son Telemachus.

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