As you think of what are the alternatives to this system -- it's important to find alternatives because it turns out that the U.S. is dwindling in its petroleum reserves, but it is not dwindling in its coal reserves, nor is China. There are huge coal reserves that are sitting out there, and we've got to start thinking of them as biological energy, because if we keep treating them as chemical energy, or engineering energy, we're going to be in deep doo-doo.
Mientras piensas en cuáles son las mejores alternativas a este sistema -- es importante encontrar alternativas, porque resulta que Estados Unidos está disminuyendo sus reservas petrolíferas, pero no disminuye sus reservas de carbón, y tampoco lo hace China. Hay tremendas reservas de carbón existentes allá afuera, y tenemos que comenzar a pensar en ellas como energía biológica, porque si seguimos tratándolas como energía química, o energía ingenieril, vamos a estar en caquita bien honda.