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Human evolution is believed to have begun about six million years ago. Despite the passage of much time, the amount of diversity between the DNA of all humans is minimal.
Some 75,000 years ago that left something apocalyptic humans occurred in relation to life for a few to continue the species.
The cause of this bottleneck is now believed to have been a massive volcanic eruption on the Indonesian island of Sumatra.
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The eruption of a super site of Lake Toba in Sumatra attacked more than two hundred cubic kilometers of ash over an area of over one million square kilometers.
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This program explores the devastating consequences of the most powerful volcano in the last twenty-five million years – including the theory that led to a human genetic bottleneck, leaving a small group, as low as a few thousand survivors to preserve the human race – and sees the threat of super-volcanoes in the 21st century.
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