Like most mammals, humans are diphyodont: We have two sets of teeth – baby teeth and adult teeth. The technical term for our ...
Smithsonian Magazine on MSN
Watch Four Furry and Adorable Cheetah Cubs on the Smithsonian National Zoo’s Online Feed
The “strong, active” and “vocal” babies were born during the government shutdown, and they and their 5-year-old, first-time ...
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