Zee: Experts have found evidence of the Indus Valley Civilization being at least 8,000 years old and not 5,500 years old .
In addition, researchers have found proof of a pre-Harappan civilization that existed for at least 1,000 years before this.
As per a report published in Times of India, this may force a global rethink on the timelines of the so-called 'cradles of civilization'.
The scientists called climate change the reasson behind the ending of the civilization 3,000 years ago.
"We have...