How The Biggest Animal On Earth Got So Big
Whales might be the largest animals on the planet, but they haven't always been so huge. Researchers say the ocean giants only became enormous fairly recently, and over a short period of time.
Đọc thêm tại NPR
at May 24, 2017 at 06:02AM
Health & Science
Thứ Tư, 24 tháng 5, 2017
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