Bang Goes the Theory

Jem Stansfield builds a vortex cannon to pick up where the big bad wolf failed to blow over a house of brick; Dallas Campbell takes on the big brother technology that will track every one of us simply by the way we walk; Liz Bonnin confronts the controversial US scientist working to create the first generation of artificial life; and Dr Yan Wong tackles unsuspecting shoppers with a simple question: how do you cook an egg with a piece of newspaper?

In this second episode of the series, the team take on more scientific challenges. Engineer Jem Stansfield designs, builds and then puts his life in his hands by tying himself to a water jet pack. Zoologist Liz Bonnin finds out if insects are the future of food, science-mad Dallas Campbell investigates NASA's latest attempts to prove there is life beyond Earth, and roving reporter Dr Yan Wong challenges the people of Cambridge to blow up a bin liner.

In the latest of the series that puts science to the test, the team takes on more fun experiments and challenges. Dallas Campbell traces the incredible global journey of 30,000 indestructible plastic ducks, while Liz Bonnin goes on manoeuvres at the bottom of the Baltic Sea in the Royal Navy's latest search and rescue sub. Dr Yan Wong challenges the people of Cardiff to take on the might of friction, and Jem Stansfield uses two domestic vacuum cleaners to climb up the side of a building.