Of the tens of thousands of uses of industrial hemp, one of the most practical is as a building material known as hempcrete, created by mixing the inner woody core of the hemp plant, known as the hurd, with lime. It’s lightweight, insulating, naturally mold-resistant, and strong. An innovative company from Alberta, Canada, has gone a step further and has patented a structural hempcrete block that fits together like Lego.

On today’s show we talk to one of the founders of Just BioFiber — Michael deChamplain — about the blocks and how they are capturing carbon and the hearts of green builders.