Thrilling! Let the best logo win!
I think that the best logo is from Greece, ElefsinaCongratulations!S.N.
I mean the one with the children making "ATOM" with their bodies. (the colourful one)S.N.
Thank you so much for your interest, S.N.! Who are you??
I am Natalie's (Greek team) mum! I check ATOM blog everyday because I find it very interesting. I am a maths-teacher myself as well and I kind of like all this mathematics promotion! Go maths!