You might not be familiar with his name, but you may have marveled at one of the many projects he’s been involved with. Leslie Earl Robertson is an American engineer who helped to create some of the most innovative and daring buildings of the modern era. Robertson was the lead structural engineer of the Twin Towers of the original World Trade Center in Lower Manhattan. He worked on that project with architect Minoru Yamasaki. Yamasaki was just one of many internationally renowned architects Robertson got to work with. Robertson writes about his storied career in a new book called The Structure of Design: An Engineer’s Extraordinary Life in Architecture. He joins us in the studio this week to talk about it.