Located at the University of Guelph-Humber, the plant wall, also known as the living wall, is a new form of technology that uses a biological system to filter indoor air. Alan Darlington, who maintains multiple University of Guelph degrees, and is also the inventor of the plant wall says, “that eye-catching ‘plant wall’ extending from top to bottom at one end of the four-story building's atrium will provide lush relief year-round. Beyond esthetics, the bio-filter will help clean and freshen the air in the building, and is expected to help reduce the school's air-conditioning bill.” The Guelph-Humber plant wall is one of the largest and a part of the fourth installations that Darlington and his company completed. The plant wall is approximately 150-square-meters and it consists of roughly o