Explore the groundbreaking discovery of 'dark oxygen' produced at the seafloor in this informative 14-minute video. Learn about the evolution of oxygen on Earth and the traditional understanding of the oxygen cycle before delving into the unexpected production of molecular oxygen 4000 meters below the surface. Understand why this finding challenges previous assumptions about oxygen formation and its implications for Earth's chemical cycles and biosphere. Discover where dark oxygen has been detected, how it forms, and its potential significance for the origin of life and deep-sea mining. Gain insights into this revolutionary concept that reshapes our understanding of Earth's systems and opens new avenues for scientific exploration.