Fly Ash Is All Around Us
The only reason sidewalks, streets, and homes exist is because of fly ash. You’ve certainly seen it many times, but you probably didn’t recognize what you were looking at. It’s a bunch of ground-up coal that builders use to reinforce concrete. Even though we spend most of our time walking around cities on fly ash, make sure you stay far away. It’s highly radioactive. Looking at it under a microscope, you’ll notice it looks like another planet. It’s full of craters, differently-sized rocky islands, and an all-black surface. It looks like the next time we walk on fly ash, we’ll think of it very differently (Cracked).