Via Misha Lepetich:
Gapminder is a non-profit venture for development and provision of free software that visualise human development. This is done in collaboration with universities, UN organisations, public agencies and non-governmental organisations…It was founded by Ola Rosling, Anna Rosling Rönnlund and Hans Rosling on 25 February 2005, in Stockholm.
You can view visualization of some trends here, click income for instance, or health. Misha also sends this informative presentation by Hans Rosling at a TED conference.