Forest Trees.
I agree that Romans deforested great areas. Those areas must still recover. But with a human population now numbering in the billions, we can expect more and not less deforestation. Look at the Brazilian rainforest for confirmation.
I vote for less and not more deforestations. We might then stand a chance to live with whatever other animal species that managed to survived the total onslaught of mankind. There are many lists of animals that have been killed of. Will mankind join the dinosaurs and leave only fossils behind?
Einstein said that he knows what world war three will be fought with. But not how world war four would be done.