Why Didn't Earth's First Oxygen Stay in the Air?

Episode 4.2 — How Earth Got Oxygen Why oxygen accumulated long after oxygen-producing photosynthesis began, and how the Great Oxidation Event transformed the atmosphere, oceans, climate, and life. Sources, visual credits and license information: https://from-cosmos-to-civilization.p... Chapters: 0:00 The Balance That Held 2:18 The Balance Tips 7:49 Iron Oceans, Striped Rock 13:31 The Greenhouse Gives Way 16:51 Ice and Recovery 20:43 Breathing With Oxygen 25:17 A Screen Against Ultraviolet 27:37 Overshoot and the Long Plateau How this film was made Created and editorially directed by Anders Lunde using a custom production system developed over six months. AI assists research, drafting, programming, and visual production; I review and edit the material and make the final editorial decisions. Narration uses text-to-speech. Visuals combine custom-built scientific animations, AI-generated reconstructions, and credited scientific imagery. About the creator Anders Lunde holds a master’s degree in molecular biology from the University of Oslo and a PhD in developmental neuroscience, with doctoral research involving transcription factors and RNA sequencing. He currently works as an IT developer and develops the production system behind From Cosmos to Civilization. From Cosmos to Civilization is a chronological science documentary series, following the history of the universe, life and humanity from the Big Bang to the death of Augustus. Watch the episodes in order:    • From Cosmos to Civilization — Episodes in ...   Previous: Episode 4.1 — Earth’s First Ecosystems    • Science Documentary - Earth's First Ecosys...   Next: Episode 4.3 — Where Mitochondria Came From    • Science Documentary - Where Mitochondria C...   Media credits: NASA - 12:20-12:26, whaleback ast 2020198 image AZ Geological Survey @AZGeology - 10:01-10:13, This is a slab of banded iron formation (BIF) from the; source: https://x.com/AZGeology/status/124976... Eawag - 24:29-24:34, csm teaser 0bb379b038 image Geomartin - 10:28-10:34, Folded Dales Gorge Frm Gumsley et al. - 15:33-15:49, Gumsley%20et%20al.%%282017%% %20Timing%20and%20tempo%20of%20the%20Great%20Oxidation%20Event image; 15:49-15:59, Gumsley%20et%20al.%%282017%% %20Timing%20and%20tempo%20of%20the%20Great%20Oxidation%20Event image Gypsy Denise - 7:50-7:59, Karijini National Park, Pilbara Region, Western James St. John - 7:59-8:04, Jaspilite banded iron formation (BIF) (Hamersely Group; 18:19-18:31, Clast-rich mixtite (Coleman Member, Gowganda Formation; 18:31-18:36, Dropstones in argillite (Coleman Member, Gowganda Mixkit - 13:16-13:25, Red hot metal sheets going out of the furnace; 21:16-21:20, Portrait of a man breathing while doing yoga; 21:44-21:50, Smoke coming out of charcoal; 21:50-21:56, Red hot coal and flames; sources: https://mixkit.co/free-stock-video/re... https://mixkit.co/free-stock-video/po... https://mixkit.co/free-stock-video/sm... https://mixkit.co/free-stock-video/re... NIH - 25:46-25:57, image Offenbacher - 24:23-24:29, Lago Cadagno See Val Piora USGS - 7:46-7:50, Banded Iron Formation of Hamersley Range DSCN2938; 8:04-8:24, Banded Iron Formation of Hamersley Range DSCN2938 Custom animations and figures: From Cosmos to Civilization. Third-party material incorporated into animations is credited on the linked sources page. Music: Meditation From The Star Orion by OctahedronMusic (Envato Elements).