Matches in DBpedia 2014 for { ?s ?p Attenborough muses on the purpose of human eyebrows, suggesting that they were originally used by our ancestors to communicate through expressive facial gestures, much as many primates do today. He describes an occasion where he tested out the universality of the eyebrow-lift gesture. In 1971 he joined an expedition to a remote highland valley in central New Guinea to search for an uncontacted tribe, the Biami . After an exhausting trek on slippery paths through dense rainforest, they came across footprints. They followed them, but the people ahead were moving faster. Five mornings later, Attenborough woke to find seven Biami men watching him. He tried the eyebrow-lift, and they responded, but didn't smile. The Biami didn't understand the expedition's interpreters, so the only communication possible was by gestures. The explorers offered salt, which was traded for food, and indicated they would like to meet more of the tribe. They were led into thick forest, but the Biami disappeared and Attenborough saw no further sign of them.. }
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- David_Attenborough's_Life_Stories shortsummary "Attenborough muses on the purpose of human eyebrows, suggesting that they were originally used by our ancestors to communicate through expressive facial gestures, much as many primates do today. He describes an occasion where he tested out the universality of the eyebrow-lift gesture. In 1971 he joined an expedition to a remote highland valley in central New Guinea to search for an uncontacted tribe, the Biami . After an exhausting trek on slippery paths through dense rainforest, they came across footprints. They followed them, but the people ahead were moving faster. Five mornings later, Attenborough woke to find seven Biami men watching him. He tried the eyebrow-lift, and they responded, but didn't smile. The Biami didn't understand the expedition's interpreters, so the only communication possible was by gestures. The explorers offered salt, which was traded for food, and indicated they would like to meet more of the tribe. They were led into thick forest, but the Biami disappeared and Attenborough saw no further sign of them.".