China is soon building two Vertical Forest buildings planted with trees and shrubs in Nanjing city. This is to help the city's anti-pollution drive. The two buildings are scheduled to be completed sometime next year.

It is an understatement to say that China has pollution problems. The pollution is so bad at Beijing that residents are not able to walk the streets without having to wear a face mask. Nanjing has an air-quality index of 167, which categorises it as "unhealthy." In comparison, Sydney and New York both have "moderate" indexes of around 60, while London is at about 100, teetering between "moderate" and "unhealthy." reports CNET.

The two Nanjing Towers will absorb enough carbon dioxide to make around 132 pounds or 60 kilograms of oxygen daily. The buildings will be made by Italian architect Stefano Boeri. Nanjing will be the third city to get a Vertical Forest, following ones built in Milan, Italy and Lausanne, Switzerland.

The towers will stand at 354 and 656 feet tall or 107 and 199 metres. It will be planted with 1,100 trees and a total of over 2,500 shrubs and plants. The shorter tower will house a Hyatt hotel, while the taller one will have a museum, offices and a school.

The Nanjing Towers are actually the third such structure built but will be the first ones in Asia. The first one was finished in Milan, Italy in 2014, and is a residential area. The second one is in Lausanne, Switzerland. Stefano Boeri, the architect behind these architectural wonders, also plans to build similar buildings in other cities in China, according to the Technology Inquirer.

Since 2014, the Chinese government authorities have been looking for ways and working hard to reduce the amount of pollution in the air. They have been closing down coal-burning factories and limiting the amount of traffic on roads.