Max Roser, a ‘data visualisation historian’ at the Oxford Martin School. He believes that in order to understand the world, you need a lot of perspective.

To find perspective, he has compiled data about our world over time and shares it at

“The good news is that all this perspective gives a surprisingly optimistic picture about the state of the world.”

According to Roser, “The optimists of the 1970s were the realists.”