Multiple modular systems were tested against various metrics of success. Here improvements in airflow and impacts on air quality while reducing energy of ventilation were of higher importance resulting in a novel indoor-outdoor living wall for passive ventilation in appropriate climates. In this case we are investigating a novel indoor-outdoor modular vegetated ventilation system, on exhibit at the Tallin Bienalle. . Image © Andreas Theodoridis/RPI CASE/Yale CEA