Every NFL player is required to wear a helmet, but the helmets of today are a far cry from the leather creations from decades ago. Reactions looks at everything that goes into a football helmet and how chemistry helps keep players safe.

Reactions is checking out some firework science. There's a bunch of chemistry that goes on when these guys light up the sky at night.

This week Reactions is looking into the chemistry behind deep fried turkey for your Thanksgiving dinner. There's a lot of science that goes into cooking that bird. But before you whip out that deep fryer, you're going to want to watch this video. Today we're bringing you the do's and don'ts of turkey frying, all the better to help you not burn your house down this year.