4 ms·

I've heard it put this way: energy is the only resource. If we have enough energy almost anything can be recycled or turned into anything. Wastewater and saltwa

• marcosdumay 4y ago
  > energy is the only resource Hum... It's the only one we have to consume. But we still need the others, even if on fixed amounts.
• imtringued 4y ago
  That is absurd. If you only have energy, you have nothing that is worth transforming. It is more appropriate to say that land(including the atmosphere surrounding it) is the most important source of wealth, as you can both extract energy and elements from it. The land on the moon is worth very little as there is almost no water on it. If we could extract rocket fuels from there we would already be sending people to mars. People don't seem to understand how valuable our planet is.
  • eru 4y ago
    > The land on the moon is worth very little as there is almost no water on it. For water, the moon mostly lacks hydrogen. There's lots of oxygen in the rocks up there. In general, I have sympathy for your position. I think the person you replied to meant that being on earth, all you need is electricity. The rest falls into place. Yes, the earth is extremely convenient.
• eru 4y ago
  Well, it's not so much energy by itself, but an energy gradient. In simple terms, having electricity is great. In contrast, oceans full of water at a balmy 20C have lots of heat energy, but you can't really use it, if there's no gradient. See the second law of thermodynamics. Or in other terms: you want electricity and a way to get rid of waste heat, like being able to radiate into outer space.