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In a U.S. First, a Commercial Plant Starts Pulling Carbon From the Air
(www.nytimes.com)
This is a most excellent place for technology news and articles.
I thought this hypothesis was disproved and it was some geological process that buried the trees? I remember there was a study about lignin content in other fossils and it was compatible with fungi decomposing wood.
The trees got buried in oxygen-free peat bogs where decomposers could not survive.