Thế giới khó tìm lời giải cho bài toán cắt giảm khí thải
Cập nhật: 16:08 26/11/2012 GMT+7
Ngày 26/11, Hội nghị khí hậu Doha khai mạc tại Qatar với mục tiêu đạt được một thỏa thuận cho việc gia hạn Nghị định thư Kyoto về cắt giảm khí thải của các nước phát triển sẽ hết hiệu lực vào cuối năm nay.
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