Advances in 3D printing technology is seamlessly linking the digital and physical worlds. As a result, demand is surging across all spheres from consumer applications right through to building and construction. On the latest episode of 'Leading Ideas', Dr Graham Phillips speaks with James Gardiner from Fahn Studios who is involved in a wide range of 3D printing projects from the underground tunnel in London to the 3D printing of ocean reefs. Matt Minio from Objective 3D tells the story of the Formula One team who needed a crucial part of their car in a matter of days and how 3D printing saved the day. Plus 3D printing for dental work and surgery means the world will change forever.