A company has developed software for your cellphone that automatically calculates your carbon footprint. The program, called Carbon Diem, uses your GPS to calculate how fast you’re moving. It then interprets that data to calculate your carbon footprint. If you’re traveling by car you’re killing Mother Earth; if you’re walking about you deserve a gold star.

Carbon Diem won’t be available till next year, and has so far been tested on Nokia and BlackBerry phones.

And just to give you an idea of how well-received Carbon Diem will be (and already is), the European Space Agency awarded its developers with some sort of “Top Notch Work, Gentleman” prize.