The fascinating story of discovery, scientific curiosity and adventure by the German explorer and naturalist Alexander von Humboldt in the Americas is a story that is intimately linked to the history of Colombia, in whose territory he carried out some of his explorations. The British historian and writer Andrea Wulf gives a masterful version of this encounter with nature in The Invention of Nature: The Adventures of Alexander von Humboldt, the Lost Hero of Science. The book has received awards such as the 2016 Royal Society Science Book Prize and was selected by The New York Times as one of the ten best books of 2015. She will talk to Gabrielle Walker about this extraordinary work.