(The Conversation) – In the earliest days of the United States, John Adams wrote to his wife Abigail about the celebration of independence, “It ought to be solemnized with Pomp and Parade, with Shews, ...

Have you ever watched a fireworks show and wondered how all the different colors – amazing reds, yellows, oranges, blues, purples, greens, and more – are made? The color, or colors, that a firework ...