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April 2003

THE RISE OF MAMMALS
Taking It on the Chin


Hair is one of the characteristics that set mammals apart from other animals. Even whales and naked mole rats have some.
Humans don't have as much hair as most mammals, but many people would prefer even less. The Gillette Company reports that, on average, American men shave an area of 48 square inches (310 square centimeters) 24 times a month, while women shave 412 square inches (2,658 square centimeters) of their bodies 11 times a month.

In 1941 Westinghouse demonstrated x-ray technology with this image of a man shaving with an electric razor. It has never before been published in National Geographic.
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Send this image as an e-greeting.
Courtesy Westinghouse Electric Corporation

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