http://www.einnews.com/mauritania/newsfeed-mauritania-science-technologyConstantly updated news and information about world affairs. http://www.einnews.com/news.php?wid=179796184 23 Jul 2008 04:50 GMT ... planting an African wall of trees from Mauritania to Djibouti to slow down the southward ... Sahel region is said to have started scientific consultations with representatives from the arid nations ... http://www.einnews.com/news.php?wid=179509358 21 Jul 2008 13:53 GMT ... planting an African wall of trees from Mauritania to Djibouti to slow down the southward ... Sahel region is said to have started scientific consultations with representatives from the arid nations ...