In this, the second episode of 'Elementals',  we look at Earth. How can we use the Earth itself to help us date the past? And how have humans modified Earthly processes?

Join us, as we converse with Dr. Aayush Srivastava on how he uses sand grains to date the archaeological record (luminescence dating) and what his research into the Thar tells us about the ebb and flow of the sands of time!

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