You can examine a rather ingenious way of illustrating the global economy - its waste and inequalities - HERE. From a website devoted to revealing the world through inventively visual methods, it's a remarkably effective way of showing up the truth of where money goes in our world, for example the awesome expense of the war in Iraq. It also exposes how affordable it actually is to feed the hungry or shift to renewable energies. However, the chaotic nature and priorities of global capitalism prevent these things happening.
In a similar vein, I also recommend the Gapminder site.
With thanks to The Sauce for alerting me to the visualisation above.