can create sparks capable of detonating the fragile shells. Firework makers must stick to wearing cotton—all the way down to their underwear. The recipe for black powder, or gunpowder ...

This week, crews have been hard at work prepping for America’s Celebration firework show. Take a peek inside the dazzling ...

Because the static electricity in synthetic clothing can create sparks capable of detonating fireworks, those who make shells must stick to wearing cotton—all the way down to their underwear.