When a grant enabled Nick Gelpi to be the first person in North America to test a new wood-based concrete, he invited graduate students at Florida International University to join in his research. This material, pioneered by the Belgian firm Prefer, has a proprietary core made of mineralized wood chips, making it more insulating and 70 percent lighter than regular concrete. The grant, provided by businessman Gary Wasserman, funded a lab class, the goal of which was to hone the material’s recipe, find a local wood source, and develop new uses. For the wood core, Gelpi chose melaleuca, a tree species that is invasive in the Everglades. Next, the team tested various blends of cement, water, and wood chips, which were donated by Allied Prefer, a partnership between the Belgian…