The foot of a woolly mammoth excavated from the permafrost in Siberia. In a new study, scientists extracted mammoth DNA that retained its original architecture, a feat never before achieved with an ancient genetic sample.
Grilled Salmon Salad With Lime, Chiles and Herbs
柠檬辣椒香草烤鲑鱼沙拉
At This Photography Festival, the Camera Points Below the Surface
在这个摄影节上,相机将焦点对准了表面以下
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