The team investigate what air pollution is, where it comes from, and what it is doing to us. Jem Stansfield reveals that cleaner-looking air does not mean healthier air.

The team explore the new era of personal medicine, as Maggie Philbin looks at the rise of online diagnosis tools and puts them to the test against a real doctor.

With the population of the UK topping 63 million, what are scientists and engineers doing to reduce the strain on our ageing infrastructure? The team investigate.

Following the horsemeat scandal, the team ask how much we really know about what's on our dinner plate, and investigate the world of food technology.

The team look at things that may threaten the safety of your family on a daily basis and Liz finds out why old and young pedestrians may never be safe.

The team put sugar on trial, investigating whether it deserves its bad reputation. Plus Jem sets out to make some pure, white, granulated sugar of his own.

In response to recent fears about the future of antibiotics, the team investigates germs and infection.

Bang Goes the Theory is back, with the first of eight episodes bringing you the science behind the headlines, and looking at the issues that have a real impact on all our lives.