Richard Hammond invites two teams to take part in his crazy experiments to win prizes.
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The teams experiment with vitamin C rockets to see who can get them to fire the furthest.
The teams use Archimedes's principle of buoyancy to determine whether items will float.
In the Blast Lab, the two teams go surfing, but there are no waves, just cardboard tubes.
The theme is air pressure, and the teams are each building a rocket launcher.
The two teams play Cup on Your Face, a game which demonstrates the strength of suction.
Richard examines the effect that moving air particles can have on objects.
Out on Richard's secret test facility, the Lab Rats try to make a giant solar balloon.
At the secret test facility, the Lab Rats try to use air pressure to crush metal barrels.
The teams compete in a race to navigate laser beams through a maze using angled mirrors.
The teams navigate an obstacle course whilst keeping a ball spinning round a funnel.