Following the death of Professor Hans Rosling - perhaps best described as a kind of international development myth buster – we rebroadcast one of his interviews for More Or Less. He asked presenter Ruth Alexander three questions from his Ignorance Test, part of his project to investigate what people know and don’t know about key-aspects of global development. Most people do badly. How do you fare?

Has there been a rise in anti-Donald Trump fake news since he became President of the United States? We’re familiar with accusations that right-wing fake news is being shared online, but what about fake news from the left?

Also, what lures people to delve beneath the earth, peering into the dark recesses that exist underground? Simon Cox hears from the urban explorers trying to find the hidden layers of cities that exist deep beneath our feet, and from a caver who sees his pastime as “mountaineering underground”.

(Photo: Hans Rosling, Statistician, Founder of Gapminder speaks about the impact of growing global population on resources at the ReSource 2012 conference Credit: Matthew Lloyd)