<p>Tim Harford investigates some of the numbers in the news. This week: </p><p>How far away is Greenland from the United States? We check a number From Our Own Correspondent. </p><p>Does converting our entire energy system to be carbon neutral come with a £7.6 trillion price tag?</p><p>Is the inevitable rise of house prices in the UK not so inevitable after all? </p><p>Can the great mathematicians of history answer the question of the hour: how to play The Traitors? </p><p>If you’ve seen a number in the news you want the team on More or Less to have a look at, email [email protected]</p><p>Contributors: Jay Foreman, one half of YouTube duo the Map Men Mike Thompson, chief economist of the National Energy System Operator David Turver, author of The Cost of Net Zero, a report from the Institute of Economic Affairs Neal Hudson, housing market analyst and founder housing research website BuiltPlace Dr Kat Phillips, mathematician and Innovation research associate at the University of Warwick, Traitors aficionado </p><p>Credits: Presenter: Tim Harford Reporter: Tom Colls Producers: Nathan Gower and Lizzy McNeill Production co-ordinator: Brenda Brown Sound mix: James Beard Editor: Richard Vadon</p>