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The disappearance of Lake Chad has been something environmentalists and governments from the four countries it covers; Chad, Nigeria, Niger and Cameroon, have been battling with for nearly three decades.
It is now a fraction of its former self, having almost completely disappeared from Nigeria and Niger, leaving a vast dry basin and unmarked land boundaries.
Today in the Chadian capital, N'Djamena a new initiative to save Lake Chad is being launched at the African session of the World Sustainability Forum.
BBC Network Africa's Akwasi Sarpong asked the General Manager of the forum, Emile Malet, for the latest on the Lake.
First broadcast 29 October 10
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