Psychoanalysis and Zen, in my private psychic geometry, are equal to nicotine
Before we start the list, here are some examples of what the plants may filter: Xylene : Paints, varnishes, adhesives, permanent markers, cigarette smoke, vehicle exhaust Formaldehyde : Pressed-wood products (MDF, plywood), insulation, furniture, carpet backing, cleaning agents Benzene : Paints, glues, waxes, cigarette smoke, detergents, gasoline fumes Trichloroethylene : Dry cleaning products, degreasers, paint removers, adhesives Ammonia : Window cleaners, floor waxes, fertilizers, pet/human urine Carbon Monoxide : Gas stoves, fireplaces, furnaces, cigarette smoke, car exhaust Carbon Dioxide : Human and pet respiration, cooking, heating, poor ventilation Toluene : Paints, nail polish, adhesives, cleaning products, leather conditioners, cigarette smoke This filtering data is based on NASAs Clean Air Study
Also one corner of the base seems to have a bit of filling or overpainting done but doesn't look too extensive
Above, our realtime counters displayed on the giant 360 video screen of the U2 360 concert stage (other photos here and here), setting the tone of the U2 show's existential question: What Time Is It In The World
Keep in mind that this method will sting if you have any small cuts on your fingers
