Considered one of the most influential individuals in the green building movement today. McLennan is the recipient of the prestigious Buckminster Fuller Prize, as well as CEO of the International Living Future Institute, a leading NGO (Non-Governmental Organization) that focuses on the transformation to a world that is socially just, culturally rich and ecologically restorative. He is also CEO of Cascadia Green Building Counsel. McLennan is the founder and creator of the Living Building Challenge, widely considered the world’s most progressive and stringent green building program. His vision and published works have made a pivotal impact on the shape and direction of green building in the United States and Canada.