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This is Scientific American 60-Second Science. I'm Cynthia Graber. Got a minute?
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Some scientists say the use of fire helped make us modern humans,
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it dramatically changed what and how we eat and may have even altered our anatomy.
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But University of Utah anthropologist Polly Wiessner thinks that fire was also important in shaping human social interactions and cultural traditions.
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Her conclusions are in the Proceedings of the National Academy of Sciences.
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Wiessner evaluated day and night activities and conversations of Kalahari Bushmen from Botswana and Namibia.
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These communities still live by hunting and gathering, as most humans did over evolutionary history.
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During the day, nearly a third of the conversations dealt with economic issues such as hunting strategies and foraging plans.
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Another third covered complaints, criticisms and gossip.
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But at night around the fire, more than 80 percent of group conversations were storytelling, often about people living far away or in the spirit world.
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Weissner says that humans are unique in that we create ties to others outside of our immediate group.
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Gathering at the fire expanded listeners' imaginations and allowed for the development of cognitive processes that made it possible to form those links to distant communities.
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Which makes fire the precursor to Facebook.
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Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.
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显示原文 =This is Scientific American 60-Second Science. I'm Cynthia Graber. Got a minute?
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显示原文 =Some scientists say the use of fire helped make us modern humans,
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显示原文 =it dramatically changed what and how we eat and may have even altered our anatomy.
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显示原文 =But University of Utah anthropologist Polly Wiessner thinks that fire was also important in shaping human social interactions and cultural traditions.
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5 / 14
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显示原文 =Her conclusions are in the Proceedings of the National Academy of Sciences.
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显示原文 =Wiessner evaluated day and night activities and conversations of Kalahari Bushmen from Botswana and Namibia.
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7 / 14
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显示原文 =These communities still live by hunting and gathering, as most humans did over evolutionary history.
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8 / 14
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显示原文 =During the day, nearly a third of the conversations dealt with economic issues such as hunting strategies and foraging plans.
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9 / 14
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显示原文 =Another third covered complaints, criticisms and gossip.
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显示原文 =But at night around the fire, more than 80 percent of group conversations were storytelling, often about people living far away or in the spirit world.
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11 / 14
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显示原文 =Weissner says that humans are unique in that we create ties to others outside of our immediate group.
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12 / 14
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显示原文 =Gathering at the fire expanded listeners' imaginations and allowed for the development of cognitive processes that made it possible to form those links to distant communities.
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13 / 14
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显示原文 =Which makes fire the precursor to Facebook.
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14 / 14
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显示原文 =Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.
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- 单句循环：关
- 单句循环：×3
- 单句循环：×5
- 单句循环：∞