Will some countries be 100% renewable by 2030?

This is part of a series on the Global Goals for Sustainable Development, in collaboration with the Stockholm Resilience Centre.

Size now matters: in a single human lifetime we have become a big world on a small planet.

This simple fact is as profound as Copernicus’s conclusion that the Earth revolves around the sun or Darwin’s evolution by natural selection. A crucial difference though, is that the need to act on this information – as global citizens and as world leaders – has become critical...