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In page Think tank:

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India has the world's second-largest number of think tanks.[1] Most are based in New Delhi, and a few are government-sponsored.[citation needed] There are few think tanks that promote environmentally responsible and climate resilient ideas like Centre for Science and Environment, Centre for Policy Research and World Resources Institute.[2][3][4] There are other prominent think tanks like Observer Research Foundation, Tillotoma Foundation and Centre for Civil Society.[citation needed]