Did you know? China is planting a belt of trees to protect land from the expanding Gobi Desert. This Great Green Wall is projected to extend some 4,480 kilometers (2,800 miles), stretching from outer Beijing through Inner Mongolia (Nei Monggol). Unfortunately, recent pressures to expand food production appear to have slowed this tree planting initiative. For more information view the text and data in Chapter 8 of Plan B 4.0: Mobilizing to Save Civilization.
Andrew C. Revkin posts an exchange between Vaclav Smil, the University of Manitoba analyst, and Lester Brown, president of the Earth Policy Institute in the New York Times Dot Earth blog. Posted January 10, 2011.