South Korea broke ground last month on a $19.2 billion public works project to remake the country's four major rivers, and President Lee Myung-bak pledged the project would be a green development. However, more than 400 environmental and other groups have sued to stop the ambitious project, alleging it will become an environmental disaster. "You can't improve water quality by building more dams," said Park Mi-kyong, an environmental activist. "It's best to let the river flow its natural course."
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