KT Tunstall Bemused By Live Earth Snub.... British singer/songwriter KT Tunstall is bemused she hasn't been invited to perform at the Live Earth concerts, because she is such a staunch environmentalist.The Suddenly I See star insists her tour buses run on biodiesel fuel to reduce CO2 emissions and last month (Jan07) teamed up with Hollywood hunk Josh Hartnett to launch a green initiative with the Global Cool organisation.The 24 hour concert will see over 100 artists perform at gigs in Shanghai, China; Johannesburg, South Africa; Sydney, Australia; London and cities to be announced in Japan, Brazil and the United States in July (07), to raise awareness of environmental issues.Artists confirmed so far for the gigs included Red Hot Chili Peppers, Snoop Dogg, Bon Jovi, Snow Patrol and Foo Fighters, but Tunstall is yet to be approached.Tunstall laments, "I'm trying to find out why I'm not on the list. It's not as if I'd be busy off-roading in my Range Rover."