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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

9:41

Does it take 10,000 litres of water to make a pair of...

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2023/07/08

Various claims have been made about how much water is used in the production of a pair of jeans, that cornerstone of casual clothing. With growing worries over the environmental impact of denim production, More or Less decided to investigate - with the help of journalist and researcher Elizabeth L. Cline who has written extensively on sustainability and the fashion industry. This programme was first broadcast in July 2022. Presenter: Tim Harford Producers: Lizzy McNeill, Jon Bithrey Programme

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28:56

Immigration: A More or Less Special Programme

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2023/07/05

More than 1.2 million people came into the country to stay for more than 12 months in 2022. As only 560,000 left the country, this means net migration is at an all-time high. Both the Prime Minister and Home Secretary have said the number of people coming needs to come down. But who counts as an immigrant? How are the figures worked out? Charlotte McDonald will be finding out what the numbers tell us about who is coming to the UK and why. Plus - what about the people who left in 2022?

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9:35

Will there be just 6 grandchildren for every 100...

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2023/07/01

An article on the UK’s Telegraph newspaper website claimed that there would be just 6 grandchildren for every 100 South Koreans today. We ask whether that figure is correct and look at why South Korea’s birth rate has fallen to one of the lowest in the world, with the help of author and mathematician Rob Eastaway and journalist and author Hawon Jung.Presenter: Tim Harford Producers: Bethan Ashmead Latham, Jon Bithrey Editor: Richard Vadon Production Co-ordinator: Brenda Brown Sound Engineer: James

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31:22

Halving inflation, Scottish tidal power and have 1 in...

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2023/06/28

One of Rishi Sunak's five priorities for 2023 is to halve inflation. Given prices are still rising, we discuss whether it's going be possible. Also does Scotland have more tidal power capacity than the rest of the world combined, as has been claimed? We look at competing claims about how prepared the NHS was before the pandemic, ask whether scrapping VAT on products like tampons and e-books has actually benefitted consumers and look at the claim that one in three women in the UK has had an

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8:58

US National Debt: is $32 trillion a big number?

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2023/06/24

‘This episode was updated on 26th June to remove an error in how we quantified 32 trillion dollars’ The level of US government debt has just surpassed 32 trillion dollars. Negotiations over raising the borrowing limit once again went down to the wire a few weeks ago. But how concerned should we all be about how much the US government borrows? We investigate with the help of Kent Smetters, professor at the Wharton School of the University of Pennsylvania and Betsey Stevenson, Professor of

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28:40

Mortgages, birth rates and does space contribute 18%...

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2023/06/21

Mortgage rates have risen to 6%. But are things as bad as when rates were much higher in the 1970s and 80s? We look at just how much pain today's rises mean. Also will there be just 6 grandchildren for every 100 South Koreans today? And we look into a claim that the space industry supports 18% of the UK's economy.Presenter: Tim Harford Series Producer: Jon Bithrey Reporters: Beth Ashmead Latham, Nathan Gower, Charlotte McDonald Sound Engineer: James Beard Production Co-ordinator: Brenda Brown

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9:22

Is breastfeeding the key to exam success?

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2023/06/17

A new study by researchers at Oxford University has linked better exam results at school with being breastfed as a baby. But how much faith can we put in the findings? Tim Harford speaks to Emily Oster, professor of economics at Brown University in the US and the author of three books about pregnancy and parenting.

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32:15

Electric vehicles, 600 million bottles and does oral...

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2023/06/14

There's been a lot of coverage about the risks electric cars may pose to infrastructure like bridges and car parks. We look at how much heavier EVs are. Plus we look at a new study that suggests a link between breastfeeding and improved grades at GCSE level. Also is throat cancer now primarily caused by a sexually transmitted disease - and are 600 million bottles going to litter Scotland because of disagreements with the UK government over the new Deposit Return Scheme?

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9:32

Counting Hunger in India

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2023/06/10

How prevalent is hunger and malnutrition in India? With Indian data journalist Rukmini S, we interrogate recent claims that hunger has worsened dramatically in recent years, and explore how malnutrition affects child mortality in the world’s most populous country.Presenter: Tim Harford Producer: Nathan Gower Editor: Richard Vadon Programme Coordinator: Brenda Brown Sound Engineer: Neil Churchill

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28:42

Lib Dem ambulance claims, affordable rent and goat meat

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2023/06/07

The Liberal Democrats say 120 people a day in England died last year whilst waiting for an ambulance. We investigate whether the claim stands up to scrutiny. Also Rishi Sunak's pandemic-era scheme Eat Out To Help Out is back in the spotlight. How much did it really contribute to a second wave of infections? We look at a claim that no single woman in England on an average salary can afford to rent a home of her own. And Jonathan Agnew said on Test Match Special that goat is the most eaten meat in

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9:48

A short history of data

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2023/06/03

We live in a world where data is everywhere – informing if not governing our lives. But this wealth of data didn’t just turn up overnight. Tim Harford talks to academics Chris Wiggins and Matthew Jones, whose new book How Data Happened aims to explain how the world we know today has been shaped by not just technological developments but battles around how emerging sources of data should be utilised.

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30:02

Food prices, net migration and beef about beef

More or Less ·

2023/05/31

Does Britain really have the most affordable food in Europe? That's a recent claim of the President of the National Farmers' Union. We ask if it's true and look in detail at what is driving rising food prices in the UK. We also try and make sense of the latest net migration figures, ask if dating apps are making Gen Z more single and explain why a correction to a correction on Radio 4's Farming Today wasn't quite right.

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8:58

Are young people more single than ever before?

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2023/05/28

What’s the definition of being single – and how easy is it to measure? There’s a perception that young people today are more single – in a relationship sense - than ever, and dating apps are to blame. But how true is that? Ellie House investigates, with the help of Marina Adshade of the Vancouver School of Economics. Presenter: Ellie House Producers: Ellie House, Jon Bithrey Editor: Richard Vadon Sound Engineer: Rod Farquhar Production Co-ordinator: Brenda Brown

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28:35

NHS waiting lists, Voter ID and measuring divorce

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2023/05/24

The government has trumpeted a big fall in those waiting over 18 months for hospital treatment in England. But total numbers on waiting lists have hit a new high. Also we look at how much impact the introduction of Voter ID had on turnout in May's English local elections. We ask whether Portugal really has a divorce rate of 94%. And we remember mathematician Dr Vicky Neale of Oxford University, who has died at the age of 39. The government has trumpeted a big fall in those waiting over 18 months for

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10:26

Detecting Bad Science with Data

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2023/05/20

For more than a decade there’ve been longstanding concerns about the credibility and reliability of science research. This “bad science” has often stemmed from poor data practice or worse. But statistics can also help us identify and understand some of what’s going wrong, whether that’s selective data-slicing or outright fabrication.Tim Harford talks to writer and broadcaster Michael Blastland about his new BBC radio documentary ‘The Truth Police’, which hears from the outsiders who are calling out

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10:21

Do 94% of marriages in Portugal really end in divorce?

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2023/05/13

Portugal has a divorce rate of 94% and India just 1%, according to a social media post about divorce in 33 countries that has gone viral. But how are these figures calculated and what do they really tell us about the quality and endurance of marriage? We investigate with guests Marina Adshade, assistant professor at the Vancouver School of Economics and Dr Cheng-Tong Lir Wang of the Institute for the Future in San Francisco.Presenter: Ben Carter Producers: Octavia Woodward and Jon Bithrey Editor:

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10:21

Why is life expectancy falling in the USA?

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2023/05/06

The average life expectancy of Americans is shrinking at an alarming rate. Between 2019 and 2021, a staggering 2.7 years has been shaved off, leaving the revised figure at 76.1 years - the lowest it’s been in more than two decades. It also sees the U.S. rank 46th in the global life expectancy charts, behind Estonia and just a nose ahead of Panama. Paul Connolly is joined by John Burn Murdoch, Mary Pat Campbell and Dr Nick Mark to discuss why, on average, citizens of the world’s richest country are

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10:24

How much is the Coronation crown worth?

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2023/04/29

Consisting of 2 kilograms of gold and 444 gemstones, the iconic St Edward’s Crown will play a central role in the coronation of King Charles III, as it has for many of his predecessors. There has been much speculation as to what the value of the centrepiece of the Crown Jewels really is. Charlotte McDonald talks to Dr Anna Keay, historian and author of The Crown Jewels - the Official History, and Alan Hart, CEO of the Gemmological Association of Great Britain. Together they break down what we know

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9:42

The Pentagon Leaks and Fox News

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2023/04/22

The leaking of US intelligence documents and the arrest of a 21 year old airman who authorities believe to be responsible has caused a media and diplomatic storm. We look at how the leaks were reported by primetime Fox News host Tucker Carlson, who said seven Ukrainian troops are dying for every one Russian, contrary to most estimates. And we examine an advert Fox News took out claiming to be the American TV network most trusted for news. With guests Aric Toler from investigative journalism site

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10:25

How to better understand and explain numbers

More or Less ·

2023/04/08

The covid-19 pandemic has brought the use of statistics into everyday life in a way never seen before. Tim Harford talks to Professor Oliver Johnson, author of Numbercrunch: A Mathematician’s Toolkit for Making Sense of Your World, about his visual presentation of covid-19 related figures on Twitter and how we can all improve our understanding and use of numbers.

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1,059 results

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