Opium played a fascinating role in southern African colonial politics, conflict and social change - from the poppy fields of Mozambique to the early days of Johannesburg city.
Tsetse flies can pass on African sleeping sickness.
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Elisha Bayode Are, South African Centre for Epidemiological Modelling & Analysis (SACEMA) and John Hargrove, South African Centre for Epidemiological Modelling & Analysis (SACEMA)
Mathematical modelling tools may predict where tsetse flies are being driven to extinction.
Lake Kariba’s water evel is down to under 30% – and it may worsen.
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Willem Landman, Council for Scientific and Industrial Research
The upcoming El Niño event may see an even bigger drop in the water level of Lake Kariba. This will have terrible consequences for the people using the river.
Southern Africa has rivers, like the Zambezi, that run through a number of countries. How best to manage this is the challenge.
Goran Tomasevic/Reuters
Southern African countries do not face water scarcity and do not need to build joint water projects. But they do need talk to each other to avoid misunderstandings.