Human beings are the only primate to be fully bipedal. The paleoanthropologist Jeremy DeSilva journeys to Africa to discover how early hominids first walked on two legs, before investigating the evolutionary advantages this gave them, including the ability to use tools and weapons and, by freeing the chest muscles, to speak. He also explains how we still live with the disadvantages, including back pain and hip and knee problems.
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Paperback. Condition: Very Good. Humans are the only mammals to walk on two, rather than four, legs. From an evolutionary perspective, this is an illogical development, as it slows us down. But here we are, suggesting there must have been something tremendous to gain from bipedalism. First Steps takes our ordinary, everyday walking experience and reveals how unusual and extraordinary it truly is. The seven-million-year-long journey through the origins of upright walking shows how it was in fact a gateway to many of the other attributes that make us humanfrom our technological skills and sociality to our thirst for exploration. DeSilva uses early human evolution to explain the instinct that propels a crawling infant to toddle onto two feet, differences between how men and women tend to walk, physical costs of upright walking, including hernias, varicose veins and backache, and the challenges of childbirth imposed by a bipedal pelvis. And he theorises that upright walking may have laid the foundation for the traits of compassion, empathy and altruism that characterise our species today and helped us become the dominant species on this planet. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Seller Inventory # GOR013645670
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