Jem Stansfield decides to build a rocket powered by toffee and then thinks it would be a good idea to ride it.

Jem Stansfield puts spider silk to the test, Liz Bonnin joins the RAF's flight school, Dr Yan Wong experiments with sodium acetate and Dallas Campbell reveals the science of magic.

Jem Stansfield builds a microwave death ray, Liz Bonnin takes on the nature versus nurture debate with monkeys, and Dr Yan Wong uses office chairs to explain how gyroscopes work.

Jem Stansfield tests new braking systems, Liz Bonnin looks into the origins of speech and Dallas takes part in a sea race with Dame Ellen MacArthur.

Jem Stansfield takes to the air with the Royal Navy to explain how helicopters work, while Liz Bonnin tests brain-training devices.

Jem Stansfield attempts to defeat the US Navy's latest weapon with no more than some foam and a crash helmet, while zoologist Liz Bonnin gets in contact with her frog brain.

Liz Bonnin investigates recent research into the magnetic qualities of cows, while Dallas Campbell puts psychological priming to the test.

Dallas Campbell traces the journey of 30,000 plastic ducks, while Liz Bonnin goes on manoeuvres in the Royal Navy's new search and rescue sub.

Jem Stansfield puts his life in his hands by tying himself to a water jet pack, while Liz Bonnin finds out if insects are the future of food.

Jem Stansfield builds a vortex cannon, and Dallas Campbell takes on the technology that will track every one of us simply by the way we walk.