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In the third episode of the series that puts science and technology to the test, the team face more fun experiments and challenges.

Liz conducts an experiment into jetlag and how to avoid it, while Dallas demonstrates the size of the solar system with the help of a bicycle and a fruit bowl. And Jem upgrades his square-wheeled skateboard to a motorbike, before trying to jump it into the record books.

The programme is co-produced with the Open University. For more ways to put science to the test, go to www.bbc.co.uk/bang and follow the links to The Open University.