Classroom Skeleton: Whose Bones Are These?
Remember that skeleton hanging in the front of your classroom? In some schools, those were actual human remains. We used science to figure out the story behind one of them.
Đọc tiếp trên NPR
At March 21, 2018 at 03:58AM
Categoty Education
Thứ Tư, 21 tháng 3, 2018
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