Humans cut down 15 billion trees each year, using the wood to build, decorate and heat our homes. However, our industrial processes waste up to 50% of it. But scientists from the Hebrew University of Jerusalem have developed a new wood-based ink that can be used for making 3d printed furniture, and it could one day replace hard-to-recycle plastics. Watch to know how it could pave the way for print at home tables and shelves.