TED Talks: The mathematics of cities ... our future?

Have just watched Geoffrey West give a talk on the "simple" mathematics that governs the growth of rats, people, cities and companies. Well worth 17 minutes of anyone's time.

Hans Rosling on Population Growth and Raising Livng Standards to check it.

I've referred to Hans Rosling several times before - his graphical view of complex data is just so compelling. So enjoy his latest 10 minute presentation from a TED talk in Cannes. "The world's population will grow to 9 billion over the next 50 years -- and only by raising the living standards of the poorest can we check population growth." This stuff is important.