Phát hiện 4 khí nhân tạo mới gây thủng tầng ozone
Cập nhật: 07:48 11/03/2014 GMT+7
74.000 tấn thuộc nhóm các hóa chất CFCs và HCFCs mới này đã góp phần vào sự suy giảm tầng ozone. Tăng phát thải quy mô này đã không được quan sát thấy ở bất kỳ các sản phẩm CFCs nào khác...
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