Made of Air transforms wood waste to into carbon-negative compounds and panels to replace materials such as fossil-based plastics and aluminium. These materials lock in more carbon in their production than they release. Made of Air uses waste sawdust or woodchips, which would usually release the CO2 sequestered by the trees back into the environment, to produce biochar. Biochar is a pyrolyzed biomass with a high carbon content traditionally used as a soil fertilizer.