Watching styrofoam melt by itself is a pretty cool visual. Watching it get sliced by a hot knife can even be described as relaxing. But watching a massive tower of styrofoam get set aflame by an insanely hot cannonball? That’s just epic. You can thank TheBackYardScientist YouTube channel for this video. The ball doesn’t just eat its way through each ‘floor’ of the styrofoam structure. It leaves a large flaming trail behind.