Comment by micw
4 hours ago
No, coal and oil is not. Since we have micro organisms that can consume wood, coal and oil will never be produced again.
> During the Carboniferous period, massive amounts of plant matter accumulated to form coal because microorganisms and fungi had not yet evolved the ability to break down lignin, a tough, aromatic polymer in woody plants.
We can make synthetic oil and I think we can also make synthetic coal, too.
Though it's close to useless because at that point they're too expensive to be worth it for anything else than very niche uses that absolutely require them.