nes aw nd nesto AfricA’s “Gre At WAll ” A i m s ot s ol W D it ef sic e r A ito n erte Destructive farming techniques demur combined with a decrease in rain- fall have led to the expansion of ww the Sahara Desert into the Sahel w region of Northern Africa. As it continues to spread farther south, the seemingly inexorable desert sand threatens to redefine what we know as Sub-Saharan Africa. But a unique plan to build a natural barrier could be the solution to deser tif ication problems in t he region. The proposal recently re- ceived funding, giving it the green The green line on this map shows the Great Green Wall’s projected location. light for implementation. The idea is called the “Grande Muraille Verte,” or Great Green The idea was originally suggest- of t he new system is its eva lu- Wall project. It proposes plant- ed in 2005 by Olusegun Obasanjo, at ion of hor i z ont a l sh i f t i ng of ing a 15-km-wide wall of trees in the former president of Nigeria. t he cont inenta l slope; prev ious a continuous
Bulletin of the American Meteorological Society – American Meteorological Society
Published: Sep 1, 2010
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