"i read somewhere once that one intercontinental flight is about as bad, carbon-footprint-wise, as a full year of driving your own car. so he might have been right..."
I actually have a question about this. I mean, I THINK the reasoning behind this as an argument is often flawed. We're talking about the carbon footprint of a whole plane, aren't we? Not about each passenger's? So, let's say we have a big plane (makes sense for an intercontinental flight) with about 500 passengers. That means that the carbon footprint for each passenger would be equivalent to 18 hours of driving approximately, right? (Or not? I s*ck at maths ).
Sorry, it's slightly off topic, but in case hatethelab meets another geek who likes to think of himself as more environment-friendly than others...