The resourcefulness of the human race never ceases to surprise. We’re learning how to 3D print human organs; travelling in self-driving cars; and recently landed a spacecraft on the surface of a comet more than 500 million kilometers away.

Yet, for all of these triumphs of ingenuity, we live in a world where 1.1 billion people – more than one in seven – still do not have access to electric light.

Read more at the Telegraph