I don't feel quite as bad about my carbon footprints now that I heard British Airlines fly their birds from NY to London Empty sometimes! Talk about leaving a carbon footprint! The amount of carbon one flight puts into the atmosphere is equivilent to running 300 cars cross country multiple times.
Presumably you are a promoter/user of car/journey sharing schemes and always drive at max PAX?
On earlier aspects of this thread, for those interesting in the macro view, someone's done a bit of maths on uk population's
total consumption:
http://www.guardian.co.uk/environmen....climatechange