Do they even take the very waste matter that we have from food and fiber and so forth, and turn it back into soil and sequester carbon -- take carbon out of the air in the process of using our cities?
Será que pegam nos resíduos de comida, fibra, etc. e devolvem-nos ao solo e armazenam o carbono — retiram o carbono do ar no processo de utilização das nossas cidades?