Populations in many societies are ageing, meaning that in future there will be fewer people of working age to support growing numbers of retirees. The result is that more of us will need to go on working for longer. To do that societies will need to break down the barriers that prevent adults from updating their skills and education.
In blue shorts and grey socks, Kimani Nganga Maruge looks like any other Kenyan schoolboy, except for one thing: he’s in his 80s. At an age when even the most active retirees are slowing down, Mr. Maruge decided a few years ago to learn to read and write. Inspired by the introduction of free primary education in Kenya, he took a pair of trousers, cut them off ...