At this year’s Greenbuild Conference and Expo, held Nov. 4–7 in Los Angeles, bio-based building materials took the spotlight — both on the show floor and in one of the conference’s most crowded sessions.

Multiple US hemp-building companies will make a big splash for around 25,000 visitors at one of the largest US construction sustainability expos and conferences later this month in Philadelphia, thanks to collaboration and the generosity of a hemp processing company and a hemp-building non-profit.