Nedlaw's Living Walls

' Our living walls break down VOCs, through the process of biofiltration. In controlled laboratory studies, our system removed up to 90% of VOCs in a single pass.  This technology is based upon nature’s inherent ability to repair itself when it is stressed or damaged. Self-rejuvenation is responsible for keeping outside air "fresh". Through careful design, we’ve been able to integrate these cleansing capabilities directly into the building’s air handling system, creating cleaner air flow. An Active Living Wall integrates the beneficial biological processes responsible for cleaning outdoor air thereby offering a sustainable, energy efficient means of controlling indoor contaminants.'
Source: http://www.naturaire.com/

I have always been interested in the utilisation of natural processes within design and think this is not only very clever, functional, but beautiful.