The indoor environment research area focuses on studying the quality and conditions of indoor spaces, such as homes, offices, schools, and public buildings. Researchers in this field explore factors that can affect indoor environments, such as air quality, temperature, humidity, lighting, acoustics, and ventilation. They also examine how these factors impact human health, comfort, productivity, and overall well-being. This research is important for designing healthier and more sustainable indoor environments and for developing strategies to improve indoor air quality and reduce exposure to pollutants.