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1. en.wikipedia.org › wiki › Human_historyHuman history - Wikipedia

   en.wikipedia.org › wiki › Human_history

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   Hace 1 día · Human history is the development of humankind from prehistory to the present, understood through the study of written records, archaeology, anthropology, genetics, linguistics, and other forms of evidence.. Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers.They migrated out of Africa during the Last Ice Age and had populated most of the Earth by ...

2. en.wikipedia.org › wiki › Kardashev_scaleKardashev scale - Wikipedia

   en.wikipedia.org › wiki › Kardashev_scale

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   Hace 1 día · According to Kardashev, these results, combined with those of other research on the age of certain cosmic objects, suggest that civilizations dating from 6 to 8 billion years ago may exist in our galaxy. ... a Type 1.1 civilization would be defined by a power of 10 17 watts, while a Type 2.3 civilization would be able to harness 10 29 watts ...

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