Episode 7 - S1.E7
Richard and his two teams of budding young scientists look at catapults and levers. In the studio the contestants get the rare opportunity to fling eggs at Ninja Nan, all in the name of science. Richard's Lab Rats find out what happens when you use the world's largest trebuchet to fire flaming cannonballs at a caravan!
Episode 7 - S1.E7
February 14, 2009
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