The geological perspectives of climate change over the Indian sub-continent are covered, along with highlighted climate impacts on the chemical weathering and maturity of sediments as well as on the manganese mineralisation in manganiferous quartzitein the Boringpadar-Amath area. The evolution of the monsoon, the most significant event of tropical belt is addressed through lake’s and river’s sediments, assessing the anthropogenic influences. Climatic conditions reconstructed through Quaternary alluvial sediments as proxy indicator of past climatic conditions over the Indian sub-continent are presented. There is also a separate chapter on the role of cosmic radio nuclide in paleoclimatic reconstructions. The inter-relation of climate change and tectonics over the Indian sub-continent is also covered, while the geopolitics on the conflicts of climate change have been discussed in the larger perspective of the South-Asian region.