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Born in an agriculturist family in Thanjavur, Nammalvar got himself a BSc in agriculture from Annamalai University. After the drought of 1983 in many parts of Tamilnadu and the subsequent floods, Nammalvar realised that absence of trees was the cause of both disasters. He interacted with thousands of disillusioned farmers. Nammalvar was associated with the setting up of Low External Input Sustainable Agriculture (leisa) in 10 districts with 3000 members. In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)