Amid rising concern about climate change, top musicians have turned to biodiesel to reduce tour-bus pollution.
"The early adopters were Neil Young, Willie Nelson and Bonnie Raitt," among others, says Adam Gardner, co-founder of Reverb, a nonprofit organization based in Maine, whose work includes helping artists reduce the environmental impact of their tours. Gardner's own band, Guster, tours with a biodiesel-fueled bus.
Sheryl Crow, Linkin Park, Dave Matthews Band, Radiohead and Phish also are among the acts labeled "biodiesel rock stars" by Tri-State Biodiesel, a Bronx-based fuel supplier.
Biodiesel -- created from vegetable oil, fat and grease -- is sold as a blend (typically 20 percent) with petroleum-based diesel and reduces pollution, according to the U.S. Energy Information Administration.