It's Alive

A Very Green Building in China Takes a New Approach to Fighting Air Pollution

There are green building projects, and then there's China's Nanjing Vertical Forest. The project aims to improve air quality by covering the facades of a pair of towers with thousands of plants, shrubs and trees. All that greenery is expected to absorb 25 tons of carbon dioxide a year and generate about 60 kilograms (132 pounds) of oxygen per day.
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