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Ancient Air Bubbles: Scientists May Have Discovered Cause of Low Atmospheric Oxygen Levels

Atmospheric oxygen levels may have decreased during the last 800,000 years due to glacial erosion. Studying air bubbles preserved in Antarctic ice for up to 1.5 million years have uncovered the likely cause of the depletion of oxygen in the atmosphere for not less than 800,000 years.
United States San Diego Daniel Stolper University Of California Rice University Yuzhen Yan Rice Department Of Earth

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