How can you improve the air quality inside the workplace in a simple way? Offices especially suffer from poor air quality. Are we slowly poisoning ourselves? Julio Radesca de Carvalho discovered that twelve house plants per person would be enough to filter the air indoors. A dozen of three very ordinary species – the areca palm, the sansevieria and the epipremnun aureum – can keep us alive even in a completely closed space. Radesca gave twelve air filterers a place of their own inside a desk with a hydroponics system. Personal Fresh Air, a maintenance free, oxygen-making solution for a healthy workplace.