Primatologist Jane Goodall

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One of Goodall's truly groundbreaking discoveries was how chimpanzees create and use tools, a skill previously thought to belong exclusively to man. She realized this when she observed a chimp select a twig, strip it of leaves, insert it carefully into a termite mound, then draw it out after it was covered in delicious insects. In the photo above, she kisses Pola, a 14-month-old chimpanzee baby at the Budapest Zoo that she symbolically adopted.