And another idea that I had as well, that was brought forward by an ecologist -- he basically did a calculation where he took one liter of gas and said, well, how much carbon it would take, and how much organic material?
Una altra idea que també vaig tenir, la va avançar un ecologista - bàsicament ell va fer un càlcul prenent un litre de benzina i dient "Ara bé, quant carboni i quant material orgànic caldria?"