The world has a huge problem with plastics. While they are a materials scientist's dream in terms of their properties, they are an environmentalist's worst nightmare, because they don't break down naturally and are very hard to recycle. But Athina Anastasaki, from ETH Zurich, has set herself the goal of making plastics that can be recycled more easily and now she thinks getting close. Chris Smith found out more... Like this podcast? Please help us by supporting the Naked Scientists