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BBC Origins of Us (2011)
Science Documentary hosted by Dr Alice Roberts, published by BBC in 2011
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Origins of Us
Dr Alice Roberts reveals how your body tells the story of human evolution. The way you look, think and behave is a product of a 6 million year struggle for survival. We have uncovered the secrets of the atom and travelled to the moon. But how did humans come to be so successful? This series explores the anatomical changes that have given us, and our ancestors, the edge. Everything from the way that we walk, to the shape of our jaw and even the way our thumbs move connects us intimately to the struggles and triumphs of our ancestors. Yet many of those changes have come at a surprising cost and the problems we face now are a direct consequence of our evolutionary journey. As much about our bodies today as about our bodies 6 million years ago, Origins of Us will change the way you see yourself.
1) Episode 1 Bones
In the first episode Dr Alice Roberts looks at how our skeleton reveals our incredible evolutionary journey. Trekking through the forests of our ancient ancestors, she goes to meet the apes who still live there today - chimpanzees. In six million years we have become very different, and what kick-started this can be found in an extraordinary fossil - Sahelanthropus. A single hole where the spine was attached suggests that our ancestors started the journey to being human by standing upright. We take it for granted, but standing up and walking is surprisingly complex - each step involves the co-ordination of over 200 muscles. Charting the major advances from Australopithecus to Homo erectus and beyond, Alice tells the epic story of human evolution through our body today. New research has uncovered clues in our ankles, waists and necks that show how our ancestors were forced to survive on the open plain - by walking and running for their lives. From the neck down we have inherited the body of our ancestor Homo erectus, who lived on the plains of Africa nearly two million years ago.
2) Episode 2 Guts
In this second episode Dr Alice Roberts charts how our ancestors' hunt for food has driven the way we look and behave today - from the shape of our face, to the way we see and even the way we attract the opposite sex. Clues to our ancestor's diet can be found in some surprising places. Alice goes in search of a lion kill to find out how the tape worms in lion's food reveal our ancestors were eating the same diet of big game 1.7 million years ago. She puts her teeth to the test to reveal that our teeth have evolved to shear through meat. But by comparing her saliva with that of chimpanzees she demonstrates that our body is as much designed to eat starch as it is to eat meat. And visiting a tribe of hunter gatherers in Tanzania, who still gather food in a similar way to our ancestors, Alice discovers that starchy tubers are crucial to survival when meat is scarce. The latest research suggests that the way the different sexes found food throughout our evolution has shaped the way we relate to each other today. The way the Hadza tribe share food and form long-term couples is thought to be the origin of love and marriage in all of us. And a fun experiment with Britain's best skateboarders shows they take more risks when women are present - it seems men are designed to show off to attract a mate
3) Episode 3 Brains
In the final episode Dr Alice Roberts explores how our species, homo sapiens, developed our large brain; and asks why we are the only one of our kind left on the planet today? The evolution of the human mind is one of the greatest mysteries. We are special because of our extraordinary brain, and to understand why we think and act the way we do, we need to look at where and why our brains evolved. The Rift Valley in Kenya is thought to be the crucible of human evolution, and here Alice examines the fossils in our family tree which reveal our brains have more than quadrupled in size since our ancestors split from chimpanzees. Drawing on research on social politics in chimpanzees, the cognitive development of children and the tools that have been found littered across the Rift Valley, Alice explores how and why our ancestors brains became so big. It's thought their need to understand each other and share knowledge has fundamentally shaped the brains we live with today.
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rolandk
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