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 ...

An curved arrow pointing right. Following is a transcript of the video. This artist torches colorful designs on copper clocks. Brent Artman grinds a large piece of copper until it's shiny. He heats ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (The Conversation) – In the earliest days of ...