The team put science to the test. Jem visits a mega-plant in Sussex to investigate the future of recycling, while Dallas explains how GPS works and how it is changing our world.

The science series takes on a royal wedding theme. Jem builds a singing road as a present for the royal couple, while Dr Yan explains the science of dad dancing.

Liz looks at the controversial science of genetically modified crops in Hawaii, while Dallas tries to remedy Jem's dust allergy by making him eat worms.

On the 50th anniversary of the invention of the laser, Jem Stansfield explains how they work and builds himself one. Dallas Campbell looks at the rise of Citizen Science.

Jem demonstrates what a calorie is, Dr Yan tests the ability of MPs to calculate risk, and Liz investigates whether we are running out of antibiotics and what will happen if we do.

The team take on more scientific challenges. Dallas goes supersonic and meets the team behind a 1000mph car, Jem tests some homemade glues and Dr Yan puzzles commuters.

The team take on more scientific challenges. Liz looks at the new IVF research that may increase success rates, and Jem tries to go 360 degrees on a playground swing.

The team looks at the science behind the recent Japanese earthquake and the tsunami it triggered. Plus the technology that attempts to protect us from the power of our planet.