The buildings constructed from cannabis

could enable the world’s supply of lumber and pulp to be grown in an area about the size of Iowa. Weeds can yield potent pharmaceuticals; cellulose-based plastics have been shown to be strong, reusable, and compostable; and luxurious carpets can be made from landfilled scrap. Roofs and windows, even roads, can do double duty as solar-electric colle

carbon-based materials created from CO2 sucked out of the air and replacing concrete; thus direct air capture of CO2, a necessary component of the drawdown effort, would provide most construction materials going forward.