Indus Valley Civilization as Old as 7380 BC: ASI

A new discovery has thrown new light on the age of Indus Valley Civilization making it older by another 2,000 years. This makes our native civilization older than that of Egypt and Babylon. The current findings revealed at the “International Conference on Harappan Archaeology”, organised by the Archaeological Survey of India (ASI) in Chandigarh place the date of the origin of the Indus Valley Civilisation at 6,000 years before Christ. The discovery puts at dispute the ongoing theory that settlements came up at an approximate of 3750 BC.

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Indus Valley Civilization collapsed due to Climate Change

The mysterious fall of the largest of the world's earliest urban civilizations nearly 4,000 years ago in what is now India, Pakistan, Nepal and Bangladesh now appears to have a key culprit — ancient climate change, researchers say.

"Until now, speculations abounded about the links between this mysterious ancient culture and its life-giving mighty rivers," Giosan said.
Now Giosan and his colleagues have reconstructed the landscape of the plain and rivers where this long-forgotten civilizationdeveloped. Their findings now shed light on the enigmatic fate of this culture.
"Our research provides one of the clearest examples of climate change leading to the collapse of an entire civilization," Giosan said.

Eventually, over the course of centuries, Harappans apparently fled along an escape route to the east toward the Ganges basin, where monsoon rains remained reliable.

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R2 frequency in Afghanistan

Source

Afghanistan (190 samples)
R2* - 0.5%
R2a - 4.2%

Afghanistan(North)(44 samples)
R2* - nil
R2a - 11.4%

Afghanistan(South)(146 samples)
R2* - 0.7%
R2a - 2.1%