The DHAN Foundation, a leading non-government organisation in the city, in partnership with the Department of Environment, Government of Tamil Nadu, organised the ‘Madurai Walkathon 2012' here on Saturday to create an awareness on climate change adaptation with emphasis on ‘Say no to plastics, Save the Planet Earth'. Mr Rajan Chellappa, Mayor, Madurai Corporation, flagged off the event which started at Mariamman Teppakulam and reached Tamukkam grounds. Over 3,000 participants including women, farmers, students from school and colleges participated.