See also 2005–06 Niger food crisis 2011 East Africa drought Desertification Yacouba Sawadogo Green Sahara 2010 Sahel famine Great Green Wall (Africa) References Further reading . External links United Nations Convention to Combat Desertification home page Climate research summary -Sahel drought: past problems, an uncertain future Text, graphics and animations from NOAA / Geophysical Fluid Dynamics Laboratory Droughts in Africa Economic history of Africa Sahel