In the latest studies by Indian scientists it is observed that climate change cannot be the sole cause for the collapse of the Harappan Civilization in the Indus-Ghaggar-Hakara river valleys. Despite the decline in the monsoon they did not give up.
The researches have shown that in actual the civilization in much older than it is thought that is 8000 years old.
The studies suggest people were tend to change their farming practices despite decline in the monsoon.
The investigators from the IIT Kharagpur have discovered that they switched from water-intensive crops when monsoon was stronger to drought – resistant crop when it was weaker.
On the Indian subcontinent, the major centres of this civilisation include Harappa and Mohenjo-Daro in Pakistan and Lothal, Dholavira and Kalibangan in India.
To find out how old the civilisation is, the researchers dated pottery of the Early Mature Harappan time — by a technique called optically stimulated luminescence (OSL) — and found it to be nearly 6,000 years old, the oldest known pottery so far. The levels of pre-Harappan Hakra phase have been dated as old as 8,000 years.