Natural ventilation systems, operable windows, clerestory openings, solar-powered fans, evaporative cooling, radiant floor cooling, green roofs, living walls, bamboo facades, wooden structures, open-air corridors, atriums, sky gardens, vertical farming, hydroponic systems, misting systems, shading devices, overhangs, trellises, wind catchers, solar chimneys, thermal mass, night purge ventilation, mixed-mode ventilation, hybrid ventilation systems, energy-efficient HVAC systems, sensors and automation, real-time monitoring, data-driven optimization, sustainable building materials, low-carbon emissions, net-zero energy consumption.