Harrison is on a quest to break a karate board with his bare hand, but first he’ll need some expert help – from a materials engineer and a karate master -- to understand the science behind why things break. Hiii-yaaa! “How can you break things with a karate chop?” Kids compete in an egg-drop challenge, to see what kind of padding materials can protect a raw egg when it’s dropped from a great height. Harrison has a dynamite time at a rock quarry when an expert helps him blow up rocks with real explosives!