Whether you realize it or not, if you’re headed to a concert in the Bay Area this weekend, you may be heading to an event that’s part of The Green Apple Music and Arts Festival. Billed as “The World’s Largest Earth Day Celebration”, eighteen Bay Area venues are participating, as are over forty in New York City and Chicago.

The festival’s goal is to raise awareness of environmental issues during the Earth Day weekend, and in addition to setting up informational tables at all of the venues, the festival organizers will be making some other notable changes. For one, all of the participating venues will be supplied with environmentally friendly concessions materials, including napkins and paper towels made of recycled materials, compostable garbage bags and biodegradable cleaning materials.

In addition, the Green Apple Music and Arts Festival will be carbon-neutral, meaning it will offset any carbon dioxide emission produced as a result of the festivities. According to festival organizers, this will be the nation’s largest carbon-neutral event ever. For a full list of local venues and shows in the festival, head on over to the official web site, where you can also find out more about the event.