The largest dam in the world is set to begin construction within months and could be generating electricity in under five years. But 35,000 people may have to be relocated and it could be built without any environmental or social impact surveys, say critics. The $14bn (£9.5bn) Inga 3 project, the first part of the mega-project, is being fast-tracked by the Democratic Republic of Congo government will span one channel of the vast river Congo at Inga Falls. It involves a large dam and a 4,800MW hydro-electric plant.

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