It's a map in which we stretched places, so that those areas which contain many people are drawn larger, and those areas, like the Sahara and the Himalayas, in which there are few people, have been shrunk away.
Es un mapa en el que se estiraron algunas superficies para que las áreas más pobladas se vean más grandes, y otras como el Sahara y el Himalaya menos pobladas, se han reducido.