This document discusses the environmental impact of large music festivals and ways festivals are promoting sustainability. It provides details on the carbon footprint of festivals like Coachella which attracted nearly 100,000 people in 2007 generating over 20,000 tons of CO2 emissions from attendees, performers who each produce around 150 tons flying to the event, and other sources. The document offers suggestions for festival-goers to travel green by carpooling, walking, or taking shuttles and discusses how festivals are encouraging recycling, refilling water bottles, and purchasing carbon offsets to green their events.