
And the winner is... Stamp No. 3 Final illustration

And a little drawing digression. I know that it is slightly off the brief, as it might be slightly too abstract, but I really like this drawing, and I AM SHARING...
350350 is the number that leading scientists say is the safe upper limit for carbon dioxide--measured in "Parts Per Million" in our atmosphere. 350 PPM--it's the number humanity needs to get back to as soon as possible to avoid runaway climate change.Quoted from 350.org