Buildings could be 3D printed using ink made of waste wood.

Researchers at Rice University in Texas have developed a sustainable method for 3D printing using ink made from recycled wood. By breaking down leftover wood into lignin and cellulose, the team created nanofibers and nanocrystals that could be combined with water to form an ink-like substance. The ink was then used to 3D print objects, which were strengthened by freeze-drying and heating. The researchers hope that this method could eventually be used to build larger structures, such as houses, without the need for cutting down trees. [Extracted from the article]