I just came across this tweet by Bill Gates: fascinating!
A new Hans Rosling video from the BBC which is well worth the four minutes to watch - Hans Rosling's 200 Countries, 200 Years, 4 Minutes - The Joy of Stats - BBC Four - YouTube
Wery well done and intersting video, Sanne, but where is Bill Gates?
Don’t know! It was his tweet and it was he who mentioned Hans Rosling’ video…
Maybe I ate too many Lebkuchens and Domino-Stones (both are quite heavy German Christmas sweets) – but I asked myself all the time: Where is Bill? 
That reminds me of my son’s joke: I forgot to padlock my Christmas cake: it was stollen!
I am sorry that Bill Gates does not turn up in the video, he tweeted about it, I watched and passed the info on… (along with hundreds of others, I’d think.)
The video is very informative, and it’s very well done!