Khủng long chết vì rét
ột robot khủng long trong công viên ở Mỹ. Ảnh: AP.Các nhà nghiên cứu Anh khẳng định rằng sự giảm nhiệt độ đột ngột của môi trường sống khiến loài khủng long đi vào con đường tuyệt chủng. Họ cho rằng cách đây 137 triệu năm, nhiệt độ của đại dương đột ngột lạnh đi chỉ còn khoảng 9 độ C và điều đó đã gây cái chết hàng loạt cho những con khủng long trên trái đất, Telegraph cho hay. Trước đây một số nhà khoa học cho rằng loài vật này bị tuyệt chủng cách đây 65 triệu năm, vì một nguyên nhân khác.
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