Researchers made wood knives and nails that are sharper and stronger than steel

University of Maryland scientists have developed a process to harden wood, making it a 'renewable alternative to steel and plastic.' Wood that's been hardened with the process can be used to make a wooden table knife 'nearly 3 times sharper than most commercial table knives' and a wooden nail that's 'as functional as a steel nail with comparable performance.' — Read the rest