I was struck by this illustration browsing Drawn's feed. I still haven't figured out what the equation is supposed to relate. The caption on illustrator Mark Smith's site reads
Green idealists fail to make the grade. The people that recycle the most are also the most likely to cause serious environmental damage by taking long haul flights when holidaying abroad.Is the equation relating atmospheric quantities? Any of you know? Check out Smith's other work. You might enjoy it as much as I did.