Sometime about 400,000 years ago, humans learned to fully control fire. This breakthrough radically changed our diets, because we could now cook food, but did it transform our culture as well? A study of evening campfire conversations by the Ju/’hoan people of Namibia and Botswana (pictured above) suggests that by extending the day, fire allowed people to unleash their imaginations and tell stories, rather than merely focus on mundane topics.
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