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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.
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.