To combat climate change, scientists have been developing technologies to reduce the amount of carbon dioxide in the atmosphere. These include pulling CO2 out of the air and storing it underground. Ning Zeng, an atmospheric scientist at the University of Maryland, is proposing another carbon-removal strategy: digging trenches and then filling them with logs before filling them back in.

He presented the research last week at the American Geophysical Union conference in San Francisco. The idea is simple. It buries unused logs from trees in managed forests a few meters underground. Then, they are covered in clay to create an oxygen-poor environment that would stop or reduce the decay and thus release of CO2 from the wood. “The logs can be preserved for thousands of years or longer,” Zeng told C&EN.

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https://cen.acs.org/environment/greenhouse-gases/burying-wood-reduces-carbon-dioxide/101/web/2023/12