China has hired the Italian architect Stefano Boeri to build a forest city in the mountain area of Guangxi in the southern part of the country. Titled Liuzhou Forest City, the development in China will be a fully functioning city, complete with offices, houses able to home 30,000 people, hotels, hospitals and schools. Every building, street and pathway will be entirely covered by plants and trees. This will help to absorb an estimated 10,000 tons of CO2 emissions and 57 tons of pollutants each year, as well as producing around 900 tons of oxygen when it’s completed in 2020. The city will contain 40,000 trees in total, as well as almost one million plants of over 100 species. It will also be fully sustainable, as it will use a geothermal source for air conditioning and solar panels on the majority of the roofs to collect energy.