This EuroMonitor report looks at the world through the prism of its young populations.
The proportion of population aged below 30 in the global population stood at 50% in 2012, down from 62% in 1980.
The below figure is fascinating. Look at Middle East and Africa. Not only do they look different and talk a different languages they are different they are young.
We are all aware of the much discussed issue of ageing. I am not sure if that is easier to solve than the one of too many young.