Mumbai, February 8, 2009 – In the biggest ever initiative to spread environmental awareness, NDTV in collaboration with Toyota launched Greenathon.th Feb, some of the renowned and acclaimed Bollywood actors and singers – During this 24 hour live programme which started on Bipasha Basu, Govinda, Arshad Warsi, Madhuri Dixit, Dia Mirza, Malaia Arora Khan, Sunidhi Chauhan, Shaan, Kailash Kher, Sukhwinder Singh and Raageshwari – took the green pledge to save the environment and enthralled the audiences with their mind blowing performances.