lesotho: Saved, or ruined, by 'White Gold'

The Lesotho Highlands Water Project has throttled wild rivers and drowned verdant valleys. Its concrete megadams have flooded out thatched huts, subsistence farms and grazing lands here in the impoverished mountain region known as the Roof of Africa. And now the project is embroiled in one of the biggest corruption scandals in the checkered history of African development.