SOUTHERN AFRICA: Sharing the Okavango

Each January, a giant pulse of water from heavy summer rains over the south of Angola enters the Okavango River system and begins a five-month journey through Namibia to a richly biodiverse swamp in Botswana's Kalahari desert. The river is a rarity, scarcely disturbed by human development along its 1,100 kilometre length: shaping its future is the delicate task of the Okavango River Basin Commission.