You know firecrackers work. Now, we get some insight into what makes these bright balls of light go boom.

With the Fourth of July creeping closer, this is the perfect time to learn a little bit more about fireworks, which are as much a part of the holiday as barbecues, parades and American flags.

Needless to say, but we'll do so anyway, you shouldn't try this at home. You don't want to be like those nimrods who set them off in a Walmart and put your life -- and the lives of others -- in jeopardy.

Then again, maybe you don't care about the science of fireworks when you're looking deep into the dark night and seeing the sky light up. Either way, enjoy the fireworks this holiday, everyone.