Speaking at the launch, KT claimed she become a climate change campaigner after realising that her carbon footprint had become somewhat Sasquatch-sized.

“The average person emits around 15 tonnes of CO2 a year and I learned that, through the manufacture and transportation of 500,000 records, my emissions had gone up to around 650 tonnes.” Admitted the Grammy nominated Scottish singer.

KT, who’s now sold over 3.6 million records, has since led the way in green touring through embracing innovative actions such as running her tour bus on environmentally-friendly biodiesel fuel, printing administration documents only on recycled paper and offsetting the entire CO2 emissions of her US tour – including that of all of her fans’ transport to and from shows.

KT went on to propose that in her opinion the best way to tackle climate change is make it “un-cool and unacceptable” not to be involved.

Josh Hartnett echoed KT’s sentiment and spoke of when he first purchased a hybrid car back in 1999: “I was living Minnesota, which is hardly the coolest place in the world, and I was driving around in a Prius and getting funny looks. Now everyone wants one and they can’t get them,” stated the star of ‘Pearl Harbour’ and ‘Sin City’ before modestly adding: “I’m just trying to do my best and if everyone wants to follow suit then that’s cool.”

Keep checking back for more Global Cool launch news.