​Dark Oxygen

  • A recent study uncovered dark oxygen 4,000 metres below the Pacific Ocean's surface in the Clarion-Clipperton Zone (CCZ).
  • The study reveals that oxygen is released from mineral deposits at these depths, independent of photosynthesis.
  • Previously, photosynthetic organisms were believed to be the primary source of oxygen on Earth.
  • The discovery suggests that iron and manganese-rich polymetallic nodules in the CCZ can produce oxygen without sunlight.
  • This finding indicates that there could be additional mechanisms contributing to Earth's oxygen supply.
  • The research also implies that life on Earth might have existed before the rise of ....
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