Lake Chad: UNEP & Google Earth highlights environmental change

Lake Chad, was once the sixth largest lake in the world. Historical imagery, which can be viewed as part of Google Earth's imagery, show the dramatic changes from the 1970s to the 1980s and 1990s as much of the lake dried up. See this and other locations of environmental change as part of the UN Environmental Programme's (UNEP) "Atlas of Our Changing Environment."