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PODCAST

More or Less

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

science mathematics

All Episodes

10:25

A groundbreaking new proof for Pythagoras’ Theorem?

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2023/04/01

Pythagoras’ Theorem, explaining the relationship between the three sides of a right angled triangle, is one of the most famous in maths. It’s been studied and put to use for thousands of years. Now two US high school students say they’ve found a new trigonometric proof for the theorem, something many in the mathematical community believe to be impossible. We discuss Pythagoras’ Theorem, the importance of proofs in maths and the chances of this being a real breakthrough with mathematician, author and

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9:52

Covid vaccines and false claims about miscarriage

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2023/03/25

Misinformation around covid-19 and vaccines is rife and as the data available increases, so do often misleading and even wild claims. This week More or Less examines multiple viral claims that the Covid 19 mRNA vaccines increase the risk of miscarriage. To explain where these incorrect figures come from and what the science actually tells us, we are joined by Dr Viki Male, senior lecturer in reproductive immunology at Imperial College London. Presenter: Charlotte McDonald, Producers: Octavia

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9:52

Silicon Valley Bank: a very modern bank run

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2023/03/18

After the collapse of Silicon Valley Bank sent jitters through the financial system, Duncan Weldon explains how it’s just the latest in the long history of bank runs.He talks to financial analyst and former banking regulator Dan Davies - author of ‘Lying for Money’ - to understand how bank runs happen, and what the repercussions of this very modern bank run might be for the global financial system. Presenter: Duncan Weldon Producer: Nathan Gower Editor: Richard Vadon Programme Coordinators:

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8:57

Do fungi kill three times as many people as malaria?

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2023/03/11

The smash hit TV show and video game ‘The Last of Us’ has spawned lots of curiosity about how worried we should be about the relatively unknown world of fungi. A figure in a recent BBC online article stated that fungal infections kill around 1.7 million people a year, about three times as many as malaria. In this episode we look at the both the global fight against malaria and David Denning, Professor of Infectious Diseases and Global Health at the University of Manchester explains the risks posed

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10:11

Does your jewellery contain stolen Brink’s-Mat gold?

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2023/03/04

The Brink’s-Mat robbery remains to this day one of Britain’s biggest and most audacious heists. Six armed men stole diamonds, cash and three tonnes of gold bullion from a warehouse close to London’s Heathrow Airport in November 1983. It’s now the subject of a BBC television drama, The Gold, which includes the claim that most gold jewellery bought in the UK from 1984 onwards will contain traces of that stolen gold. But how true is that? Tim Harford and team investigate, with the help of Zoe Lyons

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28:34

UK vs European energy prices, falling excess deaths...

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2023/03/01

Does the UK really have by far the highest domestic energy bills in Europe? We debunk a viral social media claim suggesting just that. Also the number of excess deaths has been falling in the UK - how positive should we be that we’re through the worst? Plus do we really have access to only 3% of rivers and 8% of the countryside in England – and after the conviction of former MP Jared O’Mara we ask whether 5 grams of cocaine is a lot.

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10:47

Do 29,000 coffee pods really go to landfill every...

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2023/02/25

How environmentally destructive is our thirst for coffee? Tim and the team investigate a claim that 29,000 coffee pods end up in landfill globally every minute with the help of Dr Ying Jiang, a senior lecturer in bioenergy from Cranfield University in the UK.

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29:02

Reoffending rates, Welsh taxes and the menopause

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2023/02/22

The Justice Secretary Dominic Raab says crime reoffending rates in England and Wales have fallen significantly since the Conservatives came to power. We ask whether he’s right and look more broadly at crime and conviction rates with former BBC home affairs correspondent Danny Shaw. Also we look at how much taxes in Wales might have to rise to pay for increases in NHS funding. We ask whether 13 million women in the UK are really menopausal. And we return to the debate that has sparked consternation

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10:39

Florence Nightingale and how she visualised data

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2023/02/18

Florence Nightingale became one of the icons of Victorian Britain for her work as a nurse during the Crimean War and the public health improvements she successfully campaigned for later on. Tim Harford discusses how she and her ‘Nightingale Circle’ used spectacular diagrams to explain health statistics persuasively with RJ Andrews, editor of “Florence Nightingale, Mortality and Health Diagrams”.

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28:40

Nurses' pay, ambulance times and forgotten female...

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2023/02/15

How much do nurses in the UK earn compared with those elsewhere in Europe? Tim Harford and the team investigate. Also we have an update on ambulance response times, which were the worst on record in December but are showing signs of improvement. Should we use the word data in the singular or plural? The Financial Times has just changed its policy and Tim’s not happy. We look back at women who have made a key contribution to economics but have often been forgotten. And we hear how a spreadsheet error

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10:13

Spreadsheet disasters

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2023/02/11

The UK’s Office for National Statistics recently published some dramatically incorrect data - all because of a spreadsheet slip-up. But that’s just the most recent in a long list of times when spreadsheets have gone wrong, often with costly consequencesStand-up mathematician Matt Parker takes us through a short history of spreadsheet mistakes.

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28:38

The IMF and the UK economy, NHS staff shortages and...

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2023/02/08

The International Monetary Fund says the UK will be the only major economy to shrink in size this year. We ask how much faith we should put in the IMF’s forecasts and look at some of the big economic challenges facing the UK. Also why the headline number of job vacancies in the NHS in England doesn’t tell the whole story of staff shortages. And why has there been such a dramatic change in whether people describe themselves as British or English?

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9:44

Hannah Fry on using shopping data to detect ovarian...

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2023/02/04

A new study led by Imperial College in London suggests that data from loyalty card spending in supermarkets and pharmacies could be used as a way of detecting ovarian cancer much earlier. Tim Harford discusses the findings with Professor Hannah Fry, who was most recently on the show talking about her own experience with cancer.

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28:34

Brexit and trade, pensioner millionaires and Hannah...

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2023/02/01

Has trade with the EU increased since Britain left the European Union? Tim Harford and the team look at a claim suggesting just that. There’s a row over the renaming of a street in North London previously called Black Boy Lane – but how much has it really all cost? Also are there more pensioners in “millionaire households” than pensioners in poverty. And mathematician Hannah Fry talks about a new study suggesting cases of ovarian cancer can be detected by looking at spending on loyalty cards.

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10:24

Are wild mammals only 4% of the mammal population?

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2023/01/28

A widely respected and cited study says humans and livestock account for 96% of all mammals on Earth. We ask how the study was carried out and what hope there might be for the future. Plus we answer another listener question about whether most mammals are in fact rodents. With the help of Dr Hannah Ritchie, Deputy Editor at Our World in Data and Dr Axel Rossberg, Reader in Theoretical Ecology at Queen Mary University of London.

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28:18

Coffee with the Chancellor, inflation measures, GP...

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2023/01/25

Jeremy Hunt has pledged in a new social media video to halve the UK’s high rate of inflation. Tim Harford and the team fact check the Chancellor’s claims. Also – CPI, CPIH, RPI – which measure of inflation is best for assessing the impact of the rising cost of living? Plus has the number of GPs in England gone up or down since the start of the pandemic. And does toilet paper cause 15% of global deforestation?Presenter: Tim Harford Series Producer: Jon Bithrey Reporters: Josephine Casserly, Nathan

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8:57

Does toilet paper cause 15% of global deforestation?

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2023/01/21

A British company has claimed that the production and use of toilet paper is responsible for 15% of deforestation globally. We investigate the claim and ask what the true environmental cost of toilet paper is. Charlotte McDonald talks to climate change scientist Professor Mary Gagen, chief adviser on forests to the World Wide Fund for Nature, the WWF.Presenter: Charlotte McDonald Producer: Louise Hidalgo and Jon Bithrey Editor: Richard Vadon Production Coordinator: Helena Warwick-Cross Studio

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29:16

Ambulance response times, teacher pay and Irish pubs

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2023/01/18

How long are people really waiting when they call 999 for an ambulance? Tim Harford and the team examine in detail the sheer scale of delays in responding to emergency calls. We also ask why the NHS is facing a crisis when it’s got more funding and more staff than before the pandemic, with the help of Ben Zaranko from the Institute for Fiscal Studies. Plus we fact check a claim from one of Britain’s leading teaching unions about pay. And are there more pubs in Ireland or Irish pubs in the rest of

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8:57

How we shook the world of very large numbers

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2023/01/14

How did an edition of More or Less from 2017 end up influencing the choice of official names for extremely large numbers? We tell the tale of how an interview between presenter Tim Harford and maths whizz Rob Eastaway did just that. Also featuring Professor Richard Brown, head of metrology at the UK’s National Physical Laboratory.Presenter: Tim Harford Producer: Jon Bithrey Editor: Richard Vadon Production Coordinator: Janet Staples Sound Engineer: James BeardImage: Large number, Credit: Getty

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28:59

A&E delays and deaths, religious identity in N...

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2023/01/11

Tim Harford and the team return for a new series of the number crunching show. With the huge pressures facing the NHS we ask how many people may be dying because of treatment delays in A&E. We hear what the latest census tells us about changing religious identity in Northern Ireland. We look at misleading claims about covid vaccines after the collapse of American football player Damar Hamlin. And we hear how More or Less has wielded its influence over how we all describe very large

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1,059 results

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