5. KT Tunstall

Last September, KT Tunstall partnered with her record label, Virgin, to create a 100% post-consumer waste recycled and chlorine-free booklet for her sophomore CD, "Drastic Fantastic." This followed closely on the heels of the Scottish singer/songwriter's July 2007 Live Earth performance, during which she greeted the crowed at New Jersey's Giants Stadium in a T-shirt imploring "Save the Future." Tunstall, who has taken steps to reduce the impact of her own success on the environment since the production of her debut album, told Billboard last year that getting the opportunity to take part in Live Earth "meant so much. I would have been ashamed not to have been part of it, really, because environmental issues are so important to me and that's something I really want to share." 2007 also saw Tunstall beginning work on the greening of her London home, as well as completing a carbon-neutral U.K. tour. Currently Tunstall is planning an environmentally friendly U.S. outing for May. Although details are still being hammered out, it's likely the singer will travel on a biodiesel-fueled tour bus, something she did in 2006 while touring the States. –Susan Visakowitz