Kevin sits down with Charles Bennet the original "Mr. Insulation" about how Building Science changed his business, for better or worse, and how insulation is a cornerstone of home efficiency (along with air-sealing).

Kevin chats with his friend Graham Irwin, an Architect and Passive House Designer about the (slow) growth of Passive House and where it fits in the future of homebuilding in the U.S.

Kevin sits down with an old friend, Ann Edminster a Zero-energy/emissions consultant, educator, and author about the past, present, and future efforts to build better building.

Kevin chats with Bruce King who is a registered structural engineer with 40 years of private consulting experience, and 35 years of leadership in the green building movement. He is the instigator and author of the Marin County low-carbon concrete code, and has served as a Green/Clean Tech advisor to numerous startups and other organizations.

Kevin chats with Bronwyn Berry about the growth of the Passive House movement and where it's at today and hopefully will be in the future.