Those of you who read these pages will know that I am a fan of Hans Rosling and GapMinder. His graphical analysis tools are cool.
So - here's his recent TED talk on the impact of Religion on Babies born ... watch for the simple explanation at the very end which uses some very simple technology to explain his view that the world population will peak at a certain level.
Enjoy - it's 13 minutes of enjoyment of maths, social science and thinking.
And by the way - the graphing engine that Rosling uses is either the same or similar as the graphing option in Google Apps spreadsheet - so if you haven't tried it yourself yet on some of your own data, then head to the Motion Chart option in Google's spreadsheet.