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Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another.
The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us
Early in the twentieth century, when malnutrition was common, companies such as this one advertised
Add 5 more to make 9
Each year, the leaders of the world’s eight most powerful nations meet in a secluded place to make ...