Explore the fascinating connection between ocean ridges and oxygen in this 25-minute AGU conference talk. Delve into schematic reactions, planetary fuel cells, and mass balance concepts as they relate to Earth's oxygen cycle. Examine the Great Oxidation Event and its significance in Earth's history. Analyze a simple numerical model to understand oxygen dynamics in the atmosphere. Investigate key evidence for significant events in Earth's oxygenation history and their relationship to ocean crust formation. Gain insights into the complex interplay between geological processes and atmospheric composition that have shaped our planet's evolution.