As designers and architects continue searching for innovative, sustainable building materials, hemp is becoming a front runner in the world of green design. In fact, London-based firm Practice Architecture collaborated with local hemp farmers in Cambridgeshire for the Flat House — a zero-carbon home built using hemp grown on-site. To create the amazing home, Practice Architecture’s team headed to Margent Farm, a massive 53-acre farming facility in rural Cambridgeshire that cultivates its own hemp supply.