Viễn cảnh đại dương trở về tình trạng cổ đại vào năm 2100
Cập nhật: 09:00 22/10/2012 GMT+7
Sự gia tăng nồng độ axít trong nước biển có thể biến các đại dương hiện đại trở về tình trạng của cách đây 110 triệu năm.
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