<span class=normal>The Greenathon commenced on all NDTV networks on Feb 7 at 7 pm IST. Some of the activities as a part of the initiative included round-the-clock clean up drives in Mumbai city and Yamuna Ghats in Delhi; a 24-hour marathon run by Milind Soman; and a musical extravaganza by renowned Bollywood stars. Among the many performers who sizzled on stage for this noble cause were Bollywood hotties Bipasha Basu and Malaika Arora Khan.</span>