abstract:A green wall is a wall, either free-standing or part of a building, that is partially or completely covered with vegetation and, in some cases, soil or an inorganic growing medium. The concept of the green wall dates back to 600 BC with the Hanging Gardens of Babylon.
His office was crammed with souvenirs of his peregrinations: sphinxes, skulls, obelisks, a bright-green wall clock bearing the likeness of a Shia martyr.
The pan-African Great Green African Wall (GGW), a lush strips of vegetation capable of supporting birds and other animals, would stretch from Djibouti in the Horn of Africa in the east to Dakar, Senegal in the west on the southern edge of the Sahara.