In preparation for the 4th of July, NPR had a special Science Friday segment on homemade fireworks. Some of the highlights:
- A guy on the northern border called in to say that his 4th of July tradition is to shoot fireworks at Canada.
- Steel wool is not only flammable but makes a great display when ignited by a 9-volt battery and swung around on an unfolded wire hanger.
- Host Ira Flatow loves hitting a whole set of caps with a hammer.
What a great country.