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The early ancestors of humans were reduced to 1,300 individuals and came close to extinction, scientists say

The evolutionary bottleneck 900,000 years ago might have been caused by an extreme climate event, reducing the population to just 1,280 individuals. ....

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99% of all human ancestors were wiped out 800,000 years ago, says scientists

In a new study, researchers explain that 800,000 years ago, nearly 99% of all our human ancestors were wiped out from a catastrophic event. ....

United States , Human Ancestors ,

An 'ancestral bottleneck' took out nearly 99 percent of the human population 800,000 years ago

Only 1,280 breeding individuals may have existed at this dramatic era of human history. ....

United States , Yun Xin , Giorgio Manzi , Sapienza University , Shanghai Institute Of Nutrition , China Normal University , Late Pleistocene , Texas Health Science Center , Early Stone Age , East China Normal University , Shanghai Institute , Middle Pleistocene , Human Ancestors , Population Geneticist , Middle Pleistocene , Genetic Diversity , Modern Humans , African Continents , Uman Genomic Sequences ,

Drawing in the sand at the beach? Our ancestors did the same 140,000 years ago

This ammoglyph consists of a circular groove, a central depression and two possible knee impressions. Charles HelmThe urge to draw images in sand, or create sand sculptures, seems to be irresistible, as a walk on many a modern beach or dune surface will show. Sand is a vast canvas – and may have been used as one for far longer than people realise. When people think of ancient palaeoart, cave paintings (pictographs), rock engravings (petroglyphs), images on trees (dendroglyphs) or arrangements of ....

Andrew Carr , Africa Blombos , University Of Leicester , Nelson Mandela University , Blombos Museum Of Archaeology , South Africa , Blombos Museum , Charles Helm , Sand Sculptures , Human Ancestors , Central Depression , Cape South Coast , Pleistocene Epoch , Rock Engravings ,

Drawing in the sand at the beach? Our ancestors did the same 140,000 years ago

Ammoglyphs – ancient ‘sand art’ – are a relatively new find. ....

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