Here is the most low-tech explanation you will see on population growth, infant mortality and energy consumption, courtesy of the Swedish professor of global health, Hans Rosling. In the video below, Rosling makes strikingly clear through his lego demonstration that sustainable growth is only possible if we raise the living standards of the bottom two billion.

While the solution to this problem is elusive, there are few illustrations that you will find that present this global challenge in such clear terms as this video.

Watch here: