Liz Bonnin is setting out on a global mission to reveal the full scale of the world’s plastic problem – and explore ways in which this looming environmental disaster might be averted. As she chases plastic around the world, Liz is going to show us that this is a crisis far greater than we’d ever imagined…
The BBC teams up with some of Britain's top dentists to show how the latest science can change how we look after our teeth.
