Một phần tư đất trên thế giới đang thoái hóa
Cập nhật: 14:27 29/11/2011 GMT+7
Tổ chức Nông lương Liên Hợp Quốc (FAO) hôm qua khẳng định 25% diện tích đất trên thế giới đang bị thoái hóa nghiêm trọng.
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ueG7tsavLEvDojvGr+G6pzU3xq84OEkvNcON