This short paper, by S.D. Snyder and Assoc., poses the problem of indoor air pollution and proposes a solution. Indoor air pollution is aggravated by attempts to conserve energy in buildings by making builders tighter to prevent the escape of conditioned air. This traps pollutants including carbon dioxide generated by human breathing. The opposite extreme of mandating periodic air exchanges wastes energy. The writer argues for the deployment of indoor landscaping with plants to absorb the carbon dioxide. He recommends installing automated irrigation systems.