Mine too. Interestingly, there's some suggestion that lack of lignin-degrading processes in nature at the time is more of a myth than anything. Instead, a uniqu

Mine too. Interestingly, there's some suggestion that lack of lignin-degrading processes in nature at the time is more of a myth than anything. Instead, a unique combination of climate and tectonic activity drove the high rate of coal production at that time: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4780611/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4780611/ IMO if we ever want to start taking sequestration via this method seriously it's trivial to start now - Grow fast trees(e.g. Maple, Pine). Log trees. Bury trees deep underground. Repeat. All the tech exists, is ubiquitous, and trivially easy to de-carbonize in itself. The major sticking point, I'd argue the solitary issue, is there's no money to be made in it.