That hardly sounds an environmentalist's prescription, but some argue the sustainable harvesting of the Nakai plateau's trees would bring Laos as much money as the dam, at less risk.

ECONOMIST: Laos

Rotherham Borough Council says the risk that the Ulley dam could be breached has "significantly reduced".

BBC: NEWS | UK | Flood-hit UK braced for more rain

As they dig into ancient bedrock for their futuristic dam, it seems the Ethiopians believe this is a risk worth taking.

CNN: Ethiopia powers on with controversial dam project