‘Dark oxygen’ discovered 4,000 meters below the Pacific Ocean where sunlight has never reached

Times of India

by TOI SCIENCE DESK

March 4, 2026

‘Dark oxygen’ discovered 4,000 meters below the Pacific Ocean where sunlight has never reached

Science News: For decades, school textbooks have explained that oxygen on Earth is mainly produced through photosynthesis, a process that depends on sunlight. Plant.

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Originally published on Times of India on 3/4/2026