Dryland Forestry

Africa-wide "Great Green Wall" to halt Sahara's spread?

28 December 2009
China built its famous Great Wall to keep out marauders. Now, millennia later, a "Great Green Wall" may rise in Africa to deter another, equally relentless invader: sand. The proposed wall of trees would stretch from Senegal to Djibouti as part of a plan to thwart the southward spread of the Sahara, Senegalese officials said [...]
1 2 3 4 5 6 7 8