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A recent (2024) study has found molecular oxygen (O2) being produced at the seafloor! They are calling it 'dark' oxygen because, up to this point, we understood oxygen to form only by photosynthesis (aka: at Earth's surface, where light can reach). However, this dark oxygen was produced ~4000 m below the surface, where no light can reach! This discovery reshapes our fundamental understanding of how oxygen and carbon are cycled through Earth's systems. No longer is O2 production bound to Earth's surface. This has major implications for how we view Earth's chemical cycles and biosphere moving forward. In this video, I talk about the discover of dark O2 and the potential significances of this! Hope you enjoy ;D 0:00 Evolution of Oxygen on Earth 1:48 The Oxygen Cycle (as we knew it…) 3:20 Why O2 ‘shouldn’t’ be produced on the seafloor 4:10 Discovery of ‘Dark’ Oxygen 4:49 Where Dark O2 has been detected 5:16 How Dark Oxygen Forms 7:46 Significance of D
