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Rakhigarhi remains sent for scientific study: What ancient human remains can tell us

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Flora & Fauna

Pearl Millet (Pennisetum glaucum)
Status: Not Evaluated
Threat: Historically affected by severe aridification during the late Harappan phase, prompting a shift toward drought-resilient agricultural practices.
Zebu Cattle (Bos indicus)
Status: Domesticated
Threat: Fodder scarcity and water stress during the 200-year drought period (circa 2200 BCE) that impacted Harappan pastoral economies.

Ecology Impact

The excavation and preservation of the Rakhigarhi site are regulated under the Ancient Monuments and Archaeological Sites and Remains Act, 1958 (AMASR Act). Scientific study of the site, located in the Ghaggar-Hakra river basin, helps reconstruct the palaeo-ecology and understand how ancient urban settlements impacted local riverine ecosystems and water tables.

Science & Tech Angle

The investigation employs advanced molecular biology techniques, including ancient DNA (aDNA) extraction, stable isotope analysis (carbon, nitrogen, and oxygen isotopes), and palaeopathological screening. These techniques, conducted in collaboration with the Birbal Sahni Institute of Palaeosciences (BSIP), allow researchers to reconstruct ancient diets, disease vectors, and genetic lineages without relying on undeciphered scripts.

Climate Change Link

The scientific analysis of these remains is linked to studying the '4.2 kiloyear event' (circa 2200 BCE), a period of severe global aridification. Reconstructing the dietary and health profiles of the Rakhigarhi inhabitants provides empirical evidence of how the Harappan civilization adapted to prolonged droughts and weakening monsoons, offering historical insights for modern climate adaptation.

Sustainable Development

The study directly supports SDG 13 (Climate Action) and SDG 15 (Life on Land) by providing historical baselines for human adaptation to desertification. It also informs SDG 11 (Sustainable Cities and Communities) by analyzing how ancient urban planning, drainage systems, and water conservation mechanisms sustained large populations in ecologically fragile zones.

International Frameworks

UNESCO World Heritage Convention, 1972
Rakhigarhi is on India's Tentative List for UNESCO World Heritage Site inscription; scientific studies strengthen its Outstanding Universal Value (OUV) and conservation framework.
UN Convention to Combat Desertification (UNCCD), 1994
The historical drying of the Ghaggar-Hakra river system and subsequent desertification of the region serves as a critical palaeo-environmental case study for understanding long-term land degradation and drought resilience.

Sources consulted

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