roofs

How buildings in Johannesburg could benefit from green roofs: Green roofs, like this one in Sao Paulo, Brazil, have many benefits. Leonardo Ikeda/ShutterstockThere are about 500,000 square metres of green space in Chicago in the United States. Many of these are visible, not on the ground, but on building roofs across the city. Green roofs can be seen in a number of other cities … [Read more...] about How buildings in Johannesburg could benefit from green roofs | The Conversation