The Carbon Footprint Calculator uses features available on newer web browsers to make it more user-friendly, fun and interactive. As with many improvements, there is a drawback: the calculator will not work on some older web browsers.
To use the Carbon Footprint Calculator, please use a recent version of Firefox (Mac or Windows), Explorer (Windows only), Opera (Mac or Windows) or Safari (Mac). The calculator also uses JavaScript. You must have JavaScript turned on to use the calculator.