<description>&lt;p&gt;The vast island of Greenland has found itself at the centre of a geopolitical crisis. But a little bit of geography can help us see the situation in a new light.&lt;/p&gt;&lt;p&gt;YouTuber and map expert Jay Foreman explains how Mercator maps - the maps that the vast majority of us use to understand the world - contain necessary but massive distortions and hugely exaggerate the size of the Arctic island. &lt;/p&gt;&lt;p&gt;So, why is making a flat map of a round globe so difficult? Why did we end up with a problematic map in the first place? And are there any alternatives?&lt;/p&gt;&lt;p&gt;Presenter: Tim Harford
Producer: Nathan Gower
Series Producer: Tom Colls
Editor: Richard Vadon
Programme Coordinator: Brenda Brown 
Sound Engineer: James Beard&lt;/p&gt;</description>

Tim Harford asks if Greenland is really as vast as most maps seem to suggest

The vast island of Greenland has found itself at the centre of a geopolitical crisis. But a little bit of geography can help us see the situation in a new light.YouTuber and map expert Jay Foreman explains how Mercator maps - the maps that the vast majority of us use to understand the world - contain necessary but massive distortions and hugely exaggerate the size of the Arctic island. So, why is making a flat map of a round globe so difficult? Why did we end up with a problematic map in the first place? And are there any alternatives?Presenter: Tim Harford
Producer: Nathan Gower
Series Producer: Tom Colls
Editor: Richard Vadon
Programme Coordinator: Brenda Brown 
Sound Engineer: James Beard

Is Greenland as big as Africa?

<description>&lt;p&gt;Tim Harford investigates some of the numbers in the news. This week: &lt;/p&gt;&lt;p&gt;How far away is Greenland from the United States? We check a number From Our Own Correspondent. &lt;/p&gt;&lt;p&gt;Does converting our entire energy system to be carbon neutral come with a £7.6 trillion price tag?&lt;/p&gt;&lt;p&gt;Is the inevitable rise of house prices in the UK not so inevitable after all? &lt;/p&gt;&lt;p&gt;Can the great mathematicians of history answer the question of the hour: how to play The Traitors? &lt;/p&gt;&lt;p&gt;If you’ve seen a number in the news you want the team on More or Less to have a look at, email moreorless@bbc.co.uk&lt;/p&gt;&lt;p&gt;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 &lt;/p&gt;&lt;p&gt;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&lt;/p&gt;</description>

Tim Harford investigates Greenland maps, climate costs, house prices and Traitors maths

Tim Harford investigates some of the numbers in the news. This week: How far away is Greenland from the United States? We check a number From Our Own Correspondent. Does converting our entire energy system to be carbon neutral come with a £7.6 trillion price tag?Is the inevitable rise of house prices in the UK not so inevitable after all? Can the great mathematicians of history answer the question of the hour: how to play The Traitors? If you’ve seen a number in the news you want the team on More or Less to have a look at, email moreorless@bbc.co.ukContributors: 
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 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

How close is Greenland to the United States?

<description>&lt;p&gt;In Autumn 2025 a paper in South Korea was published that excited many a vaccine sceptic online. The paper claimed that receiving a vaccination against Covid19 was linked to a 27% increase in cancer risk. &lt;/p&gt;&lt;p&gt;However, when you dig into the data there is no evidence that the vaccine caused the cancer. We spoke to Professor Justin Fendos to explain why we cannot take this type of statistical analysis at face value. &lt;/p&gt;&lt;p&gt;Presenter: Tim Harford
Producer: Lizzy McNeill
Series Producer: Tom Colls
Editor: Richard Vadon
Production Coordinator: Brenda Brown
Sound Mix: James Beard&lt;/p&gt;</description>

Why a study from South Korea does not show that vaccines cause cancer

In Autumn 2025 a paper in South Korea was published that excited many a vaccine sceptic online. The paper claimed that receiving a vaccination against Covid19 was linked to a 27% increase in cancer risk. However, when you dig into the data there is no evidence that the vaccine caused the cancer. We spoke to Professor Justin Fendos to explain why we cannot take this type of statistical analysis at face value. Presenter: Tim Harford
Producer: Lizzy McNeill
Series Producer: Tom Colls
Editor: Richard Vadon
Production Coordinator: Brenda Brown
Sound Mix: James Beard

No, a study has not shown that the covid jab causes cancer

<description>&lt;p&gt;Tim Harford investigates some of the numbers in the news. This week: A headline in the Mail says more than 100 private schools have closed since Labour came to power and ended the VAT exemption for private schools. Is that number right? &lt;/p&gt;&lt;p&gt;Is it true that when Covid hit the UK, a one-week delay in imposing lockdown led to 23,000 deaths? &lt;/p&gt;&lt;p&gt;Do 10 million families rely on X as their main source of news? That’s what government spokesperson Baroness Ruth Anderson said in the House of Lords, but is it correct? &lt;/p&gt;&lt;p&gt;s there really a “quiet revival” of Christian worship? Two YouGov polls found churchgoing had gone up by 50% between 2018 and 2024 in England and Wales. New polling data suggests otherwise. &lt;/p&gt;&lt;p&gt;If you’ve seen a number in the news you want the team on More or Less to have a look at, email moreorless@bbc.co.uk &lt;/p&gt;&lt;p&gt;Contributors: 
Professor Sir David Spiegelhalter, Emeritus Professor of Statistics in the Statistical Laboratory, University of Cambridge 
Professor Sir John Curtice, Senior Research Fellow at the National Centre for Social Research &lt;/p&gt;&lt;p&gt;Credits: 
Presenter: Tim Harford 
Reporters: Tom Colls and Nathan Gower 
Producers: Charlotte McDonald and Lizzy McNeill 
Production co-ordinator: Brenda Brown 
Sound mix: Gareth Jones Editor: Richard Vadon&lt;/p&gt;</description>

Tim Harford investigates closing schools, X users, Covid deaths and churchgoers

Tim Harford investigates some of the numbers in the news. This week: A headline in the Mail says more than 100 private schools have closed since Labour came to power and ended the VAT exemption for private schools. Is that number right? Is it true that when Covid hit the UK, a one-week delay in imposing lockdown led to 23,000 deaths? Do 10 million families rely on X as their main source of news? That’s what government spokesperson Baroness Ruth Anderson said in the House of Lords, but is it correct? s there really a “quiet revival” of Christian worship? Two YouGov polls found churchgoing had gone up by 50% between 2018 and 2024 in England and Wales. New polling data suggests otherwise. If you’ve seen a number in the news you want the team on More or Less to have a look at, email moreorless@bbc.co.uk Contributors: 
Professor Sir David Spiegelhalter, Emeritus Professor of Statistics in the Statistical Laboratory, University of Cambridge 
Professor Sir John Curtice, Senior Research Fellow at the National Centre for Social Research Credits: 
Presenter: Tim Harford 
Reporters: Tom Colls and Nathan Gower 
Producers: Charlotte McDonald and Lizzy McNeill 
Production co-ordinator: Brenda Brown 
Sound mix: Gareth Jones Editor: Richard Vadon

Have more than 100 private schools been forced to close because of VAT?

<description>&lt;p&gt;When people think of oil rich nations their mind generally goes to Saudi Arabia, Iraq and the US. &lt;/p&gt;&lt;p&gt;But according to international statistics, the country with the largest oil reserves is Venezuela, with 300 billion barrels worth. &lt;/p&gt;&lt;p&gt;At their peak they produced over 3.5 million barrels of the stuff per day. However, due to lack of investment, sanctions and mismanagement that peak is long gone. &lt;/p&gt;&lt;p&gt;Following their military intervention, the US administration claims they can get Venezuela's oil production up and running at full capacity within 18 months.&lt;/p&gt;&lt;p&gt;But can they, and why is it that estimates for other countries oil reserves have fluctuated but Venezuela’s has stayed at 300 billion barrels for over two decades? &lt;/p&gt;&lt;p&gt;Presenter: Tim Harford
Producer: Lizzy McNeill
Series Producer: Tom Colls
Editor: Richard Vadon
Production Co-Ordinator: Brenda Brown
Sound Mix: Dave O’Neill&lt;/p&gt;</description>

We investigate if there are actually 300 billion barrels of oil in Venezuela's reserves

When people think of oil rich nations their mind generally goes to Saudi Arabia, Iraq and the US. But according to international statistics, the country with the largest oil reserves is Venezuela, with 300 billion barrels worth. At their peak they produced over 3.5 million barrels of the stuff per day. However, due to lack of investment, sanctions and mismanagement that peak is long gone. Following their military intervention, the US administration claims they can get Venezuela's oil production up and running at full capacity within 18 months.But can they, and why is it that estimates for other countries oil reserves have fluctuated but Venezuela’s has stayed at 300 billion barrels for over two decades? Presenter: Tim Harford
Producer: Lizzy McNeill
Series Producer: Tom Colls
Editor: Richard Vadon
Production Co-Ordinator: Brenda Brown
Sound Mix: Dave O’Neill

Does Venezuela really have the biggest oil reserves in the world?

Tim Harford explains - and sometimes debunks - the numbers and statistics used in political debate, the news and everyday life

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