I recently became aware of these articles about rare earth metals which as I understand it are used in many different technologies including turbines for wind machines and electric cars. This seems to tarnish their "green" image. https://s.nyt.com/s/Em9ZQ68 This goes into more detail about how they are mined. https://www.theatlantic.com/doc/200905/hybrid-cars-minerals And this seems to say we "greenies" should have known better. https://seekingalpha.com/article/177940-rare-earths-jack-lifton-on-safeguarding-future-supply "Six hundred million people in the Western world are enjoying a life increasingly dominated by technology that we don't understand. In particular, we don't understand how it is made. What I see in America is a reluctance to admit that the green road starts in the black earth. We have to mine and refine the minerals and metals into forms which can then be fabricated into forms which can then be made into parts which can then be assembled into the technology devices we use to conserve energy. Everything starts at the mine or at the oil or gas well." "In the West, electronic devices using electricity produced by a huge network of generating devices control our transportation, communication, and our environment. We've got a grid that we talk about as if we understand it, but it's an extremely complicated system. We ignore the fact that we produce and distribute oil and its by-products, metals and their compounds and alloys. Nobody pays attention to that. All we do is say we've got to stop doing this and stop doing that. We have to start educating everyone as to how a metal becomes a radio or how a metal becomes a battery, how a battery propels a car." It's time to go to mars and mine their rare earths, or would it be rare mars' ?