Don't forget the trees. Maybe it's a couple of thousand years, but let them roam earth and the CO2 is gone, like the last time. Since bacteria is digesting cel

Don't forget the trees. Maybe it's a couple of thousand years, but let them roam earth and the CO2 is gone, like the last time. Since bacteria is digesting cellulose this time, we can't rely on earth to fold over old wood. Instead, humans will have to manage the storage. But that should be doable, given the speed with which we can harvest forests.