I was reading David McCondless book, Information is Beautiful.

David is a London-based author, writer and designer. who is passionate about visualizing information – facts, data, ideas, subjects, issues, statistics, questions – all with the minimum of words. I was particularly interested to see  his 'How much carbon' entry, where David has teamed up with GE to produce an interactive visual landscape

You can play around with the application to learn some interesting and surprising information about how much carbon is released during various activities.