My carbon footprint according to Defra
As I've been winding down my experiments with carbon calculators, I've been noticing more and more just how variable they can be. The results they spit out fluctuate wildly but as they all ask slightly different questions, that's not surprising. What surprises me are the differences between what they claim the CO2 emissions of your average Briton are, and if your trying to figure out whether you're a relatively big emitter or a teeny tiny one, that can be something of a problem.



Unsurprisingly, the BAA funded study over- estimates the benefits of a third runway, assuming it would generate an extra 3 million business passengers contributing £400 each to the UK economy (making it worth £5billion over 70 years) - the DfT's original estimate was for half a million new business passengers spending around £120 each.

