In this episode of the Retrofit Podcast, host Ryan Shanahan talks with Lloyd Alter, Green Building Advisor columnist and author of Living the 1.5 Degree Lifestyle. He's been an architect, real estate developer, and prefab entrepreneur, and he's currently working on a new book titled Carbon Upfront!, teaching sustainable design at Toronto Metropolitan University, and writing frequently on Substack. Lloyd and Ryan dive deep into carbon, retrofits, and so much more.