In the latest episode of the series, the team take on more scientific challenges. Dallas goes supersonic and meets the team behind a 1000mph car. Jem looks at what makes stuff sticky and makes homemade glues to test out on the other presenters and Dr Yan puzzles commuters with an optical illusion.
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.