The Bosco Verticale is the worlds first vertical forest…a system that optimizes, recuperates, and produces energy. Covered in plant life, the building aids in balancing the microclimate and in filtering the dust particles contained in the urban environment (Milan is one of the most polluted cities in Europe). The diversity of the plants and their characteristics produce humidity, absorb CO2 and dust particles, producing oxygen and protect the building from radiation and acoustic pollution. This not only improves the quality of living spaces, but gives way to dramatic energy savings year round. (via Inhabitat)