I’m involved with Giving What We Can, a community that pledges to give 10% of their income to whatever best helps in the fight against global poverty. I’ve done a few talks on this over the years, here are the Prezi’s. Feel free to re-use them or their contents (most are permutations on similar points, although the tone and emphasis has varied depending on the audience – it is worth noting many of the figures are a bit out of date). If you want me to give a talk, get in touch!