Environment & Energy

There's a paper at http://pubs.acs.org/doi/abs/10.1021/ja202642y which toys with doing this mainly for a fuel source (It has that advantage that we don't need to replace our entire transport infrastructure) but we could over-produce: sucking atmospheric CO₂ up, reforming it into CH₃OH or CH₃OCH₃ and pumping it into Ghawar would be a straightforward operation, albeit a money hole. and yes, we can re-grow a lot of forest and get carbon back into the soil.

What we can't do is re-freeze the permafrost or re-create hydrates when the surrounding temperatures are too high, so any carbon from these sources is probably going to be kicking around until the Milankovitch cycles swing back in our favour. And since we seem to dragging our heels just a little, this is going to be most of it.