I saw the post that Costas made in regards to other blogs and I wanted to add a few more, plus some links to a few non-fiction books I think IB econ kids would enjoy reading.
The other blog is Marginal Revolution run by two econ professors, which of course reminds me of a different dynamic duo. No, not the freakonomics guys, I mean those OTHER two guys.
wisdom of Crowds, Why the Many Are Smarter Than the Few and How Collective Wisdom Shapes Business.
The Tipping Point, by Malcolm GladwellThis one is becoming a standard at business schools, but it's really more than that. It's really inspiring to see how social sciences can be written up in an accessible manner. Plus, if you're a cool cat wearing some cool kicks, you'll be glorified by Mr. Gladwell.
Everything bad is good for you. read this if you play videogames, you'll have ammunition for fighting the man. The man being your resident IB coordinator and any sort of parental advisory circulating.
Understanding comics Really good, nothing to do with econ, but if you want a great overview of the history and structure of the narrative process, read it.