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Episode 4

Episode 4 of 13

Science game show. Richard Hammond's ever-loyal Lab Rats attempt to build a huge tower of bubbles, while the Science Lords take on the Cheeky Chimps in a game called Chemika-Boom.

Richard Hammond's ever-loyal Lab Rats are bubbling with enthusiasm over their experiment at the Top Secret Testing Facility: an attempt to build a huge tower of bubbles.

Meanwhile, in the lab, the Science Lords take on the Cheeky Chimps by mixing a variety of chemicals in a game called Chemika-Boom, before stepping in to the septic tank for the Messy Messy Mess Test.

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30 minutes