(FREE) UPSC Current Affairs 2024 PDF

(GIST OF SCIENCE REPORTER) Discovery of dark oxygen

(JULY-2024)

Recent discovery of 'dark oxygen' in deep ocean, where photosynthesis is impossible.
This discovery could support previously unknown ecosystems and poses implications for marine life.
Polymetallic nodules are found to potentially generate oxygen by splitting water molecules due to electric charges; they contain iron, manganese, and other minerals.
India has contracts with the International Seabed Authority and plans to explore deep-sea minerals in the Pacific Ocean; part of India's Deep Ocean Mission.
Experiments showed unexpected increase in oxygen levels in deep ocean, confirming presence of 'dark oxygen'.
Deep-sea mining could harm marine environments and requires careful consideration of environmental impacts.
Deep-sea mining for polymetallic nodules might lead to irreversible loss of ecosystem functions.