The Lao government responds following pressure from the UN and rights groups.
The Hongsa power plant has displaced more than 2,000 residents.
The WWF warns a third of them could be lost in two decades.
CH. 1: MANDARIN | CANTONESE
CH. 2: VIETNAMESE | BURMESE | KOREAN
CH. 3: KHMER | LAO | UYGHUR
CH. 4: TIBETAN
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