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Previous Volume 347:755-756 September 5, 2002 Number 10 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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"Lucy" is a fossilized female australopithecus, a member of an advanced genus of hominids who walked upright approximately 4 million years ago.¹ Today, walking remains a major form of physical activity for women. We have witnessed, however, a recent decline in the use of bipedal motion — to the point where the Segway Human Transporter, a self-balancing personal-transportation device, is being evaluated by the U.S. Postal Service as a means for permitting letter carriers to make their appointed rounds without walking.² Two articles in this issue of the Journal demonstrate that such developments are likely to accelerate the decline in . . . [Full Text of this Article]

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