Pakistan, April 14 -- Scientists have made an exciting discovery of "dark oxygen" 4,000 meters below the Pacific Ocean. This oxygen forms without any sunlight in a region called the Clarion-Clipperton Zone. This area, located between Hawaii and Mexico, is one of Earth's least explored places. Researchers believe that mineral-rich rocks known as polymetallic nodules play a key role in this process.

Historically, scientists thought that most oxygen came from photosynthesis, where plants and microorganisms convert sunlight into energy. However, the new findings show that the deep-sea nodules may function like "geobatteries." These natural batteries produce small electrical currents that can split seawater into hydrogen and oxygen without an...