蜜芽传媒

Are natural disasters on the rise? Following the devastating hurricanes to have battered the Caribbean and the United States, the floods in Asia and the mudslides in Sierra Leone, the UN Secretary General told a press conference that the number of disasters in the world has quadrupled since the 1980s - is he right? Tim Harford finds out.

First broadcast on More or Less, 15 September 2017.