Science

Scientists discover a hidden oxygen reservoir deep inside Earth

Scientists have discovered that magma deep inside Earth can store surprising amounts of extra oxygen, potentially revealing a hidden contributor to our planet's oxygen-rich atmosphere.

✦ Extractive summary — built from the sources' own reporting•From 1 source•1 min read•Updated October 29, 2026, 1:13 AM UTC

The findings suggest that ancient volcanic eruptions may have helped transform Earth's atmosphere billions of years ago, with implications for understanding life on other planets.

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