Making rock candy is a great way to watch crystals form in real time. It's also an exercise in thermodynamic equilibrium. Also, you can eat it. What's not to love?

It's the Science Center's annual family-friendly Halloween celebration. From exploding pop rocks to mentos geysers, they explore the science behind CANDY.

We know, we know - trick-or-treating is about eating candy. But there is science behind those Snickers, Skittles and Blow-Pops you worked so hard to gather in your plastic pumpkins and pillowcases.