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Tag: oxygen levels

SIU geologist uses big data to date when oxygen entered Earth

SIU geologist uses big data to date when oxygen entered Earth

— February 22, 2022

The appearance of oxygen in Earth’s atmosphere some 600 million years ago was one of the most radical events in the planet’s history. Now, a researcher from Southern Illinois University…

  • Nutrient pollution is Illinois’ ‘most widespread’ water problem

    Nutrient pollution is Illinois’ ‘most widespread’ water problem

    — February 3, 2022

    Part of a series of stories examining the nutrient loss reduction strategies and funding in Illinois Off the southern coast of the U.S., there is an area six times the size of Rhode…

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