3 ms·
Surprisingly we don't https://www.smithsonianmag.com/science-nature/world-facing-global-sand-crisis-180964815/ https://www.smithsonianmag.com/science-nature/wo
by timkpaine 8y ago
Surprisingly we don't
https://www.smithsonianmag.com/science-nature/world-facing-global-sand-crisis-180964815/ https://www.smithsonianmag.com/science-nature/world-facing-g...
- rebuilder 8y agoWe may be running out of suitable sand to use for concrete, but that doesn't mean iron dust is more abundant.
- ubittibu 8y agoI heard that there are more stars in the universe than grains of sand on earth, so we could use stars instead..
- zeristor 8y agoHave you tried mixing stars and water together?
- MarsAscendant 8y agoI believe that's the recipe for the Philosopher's Stone, from the old books. That's why the Middle-Age alchemists couldn't make one. Now we can.
- zeristor 8y agoPerhaps that’s how the sauna was invented
- darkpuma 8y agoYou're forgetting that it's easier to create rock dust from scratch than it is to create iron dust from scratch. That's important when you're comparing the two, since you can't simply scoop up iron dust off beaches and river banks anyway. Given the choice between manufacturing rock dust and manufacturing iron dust, the choice is obvious. To manufacture rock dust you: 1. Quarry rock. 2. Pulverize it. To manufacture iron dust you: 1. Quarry ore. 2. Pulverize it. 3. Smelt it (which requires coke, a basket of worms in itself.) 4. Cast it. 5. Grind it.