In Utica, we know how to do Independence Day right. Whether you're catching the city’s fireworks at Proctor Park or hosting your own backyard BBQ with sparklers for the kids, there’s one thing that never fails to impress: the colors that light up the night sky. But have you ever looked up during a fireworks show and wondered, how does the sky explode in red, white, blue... and green? Turns out, the answer is all about minerals.