Choking on factory waste: the Nile's rising scourge

As tourists pose for selfies on the shores of Lake Victoria in Uganda, factories within spitting distance of the source of the Nile dump their waste directly into Africa's longest river.

Air pollution 'silent killer' in African cities: study

Pollution in Africa's fast-expanding cities is deadlier than thought, yet green solutions could save tens of thousands of lives and avert billions of dollars in damage, a report said Thursday.

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