Fishermen on Kenya's Lake Turkana fear their lives could be ruined by the construction of one of Africa's biggest dams - hundreds of miles upstream on the Omo River in Ethiopia.
For hundreds of years, they have paddled their wooden boats out onto the lake to catch fish
which they sell in local markets. But they worry that the dam will reduce the flow of water into
the lake, leaving fish - and those who rely on fishing - unable to survive, as Peter Greste reports.
Publication date 26 March 2009
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You can listen to Peter Greste's full report on BBC Radio 4's
The documentary broadcasts on Thursday, 26 March 2009 at 1100GMT and will be repeated on Monday, 30 March at 2030GMT.