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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

27:57

Hawaiian Pizza, obesity and a second wave?

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2020/08/12

Covid-19 cases are rising in the UK - is it a sign of a second wave of the virus? We’re picking apart the data and asking how concerned we should be both now and as autumn approaches. Scotland is undercounting Covid deaths, England is overcounting them: we’ll ask why and whether the problems will be fixed. Celebrity chef Jamie Oliver claims over a quarter of all the fruit and veg kids eat is in the form of pizza, can this be true? Plus, as some people are blaming obesity for the severity of the

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8:58

Melting Antarctic ice

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2020/08/08

One More or Less listener has heard that if all the ice in Antarctica melted, global sea levels would rise by 70 metres. But it would take 361 billion tonnes of ice to raise the world's sea levels by just 1 millimetre. So how much ice is in Antarctica? And in the coming years, what impact might temperature changes have on whether it remains frozen?(Gentoo penguins on top of an iceberg at King George Island, Antarctica January 2020. Credit: Alessandro Dahan/ Getty Images)

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10:07

Covid in Africa

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2020/08/01

Do we have enough data to know what’s happening on the continent? We talk to Dr Justin Maeda from the Africa Centre for Disease Control and Ghanaian public health researcher Nana Kofi Quakyi about tracking Africa’s outbreak. Producer: Jo Casserly Picture: Volunteers wait to feed local people during the weekly feeding scheme at the Heritage Baptist Church in Melville on the 118 day of lockdown due to the Covid-19 Coronavirus, Johannesburg, South Africa, 2020. Credit: EPA/KIM LUDBROOK

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8:58

Data in the time of cholera

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2020/07/25

Tim Harford speaks to Steven Johnson about William Farr and the birth of epidemiology in the 1800s.

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8:58

Covid misconceptions and US deaths

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2020/07/18

Tim Harford talks to statistician Ola Rosling about his research into misconceptions about Covid-19. And an update on the epidemic in the US.

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14:41

Sweden’s lockdown lite

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2020/07/11

Unlike its Nordic neighbours, Sweden never imposed a lockdown to stem the spread of coronavirus. Tim Harford speaks to statistician Ola Rosling to find out what the results have been.Presenter: Tim Harford Producer: Jo CasserlyPicture: A woman wearing a face mask stands at a Stockholm bus stop where a sign reminds passengers to maintain a minimum social distance. Sweden 25 June 2020. Credit: EPA/ Stina Stjernkvist

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9:08

Why Trump is wrong about the USA’s coronavirus case...

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2020/07/04

Are cases really rising in the US or are they just testing more? Tim digs into the data.

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28:24

Why did the UK have such a bad Covid-19 epidemic?

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2020/07/01

The UK has suffered one of the worst outbreaks of coronavirus anywhere in the world. We’ve been tracking and analysing the numbers for the last 14 weeks, and in the last programme of this More or Less series, we look back through the events of March 2020 to ask why things went so wrong - was it bad decision-making, bad advice, or bad luck?

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9:11

A new Covid-19 drug and a second wave

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2020/06/27

The steroid Dexamethasone has been hailed a “major breakthrough” in the treatment of Covid-19. But what does the data say? Plus, why haven’t mass protests led to a second wave?

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28:26

Child Poverty, School Inequality and a Second Wave

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2020/06/24

As lockdown eases, why hasn't there been a spike in infections? We get a first look at the evidence for the much-trumpeted Covid-19 treatment, Dexamethasone. Stephanie Flanders tells us what’s happening to the UK economy. Keir Starmer says child poverty is up; Boris Johnson says it’s down, who's right? Plus which children are getting a solid home-school experience, and who is missing out?

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9:06

Who Should be Quarantined?

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2020/06/20

Some countries are requiring new arrivals to self-isolate, a policy designed to stop infection spreading from areas of high prevalence to low prevalence. Tim Harford and Ruth Alexander find out which countries have the highest rate of Covid-19 infection. Plus, is it really true that the coronavirus mostly kills people who would die soon anyway?

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28:55

Quarantine, Test and Trace and BODMAS

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2020/06/17

The UK has introduced new rules requiring all people arriving in the country to self-isolate for 14 days. But given the severity of the UK’s outbreak can there be many places more infectious? Is it true that Covid-19 mostly kills people who would die soon anyway? The first figures are out showing how England’s Test and Trace programme is performing, but they contain a mystery we’re keen to resolve. And we play with some mathematical puzzles, courtesy of statistician Jen Rogers.

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27:56

Antibody tests, early lockdown advice and European...

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2020/06/10

At the start of March the government's Chief Scientific Adviser Sir Patrick Vallance said that the UK’s coronavirus outbreak was four weeks behind the epidemic in Italy. This ability to watch other countries deal with the disease ahead of us potentially influenced the decisions we made about which actions to take and when, including lockdown. So was he right?

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9:01

Keep your distance

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2020/06/06

What difference does a metre make? The World Health Organisation recommends that people keep at least 1 metre apart from each other to stop the spread of Covid-19, but different countries have adopted different standards. The US Centers for Disease Control and Prevention recommends staying six feet apart - that’s just short of 2 metres; in the UK, the rule is 2 metres. But all this has a big impact on the way businesses and societies get back to work. Tim Harford investigates the economic

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27:56

False negatives, testing capacity and pheasants

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2020/06/03

As lockdowns begin to lift the government is relying on testing and contact tracing programmes to prevent a second wave of Covid-19 infections. But how accurate are the swab tests used to diagnose the disease? The UK Statistics Authority has criticised the government for the way it reports testing figures, saying it’s not surprising that these numbers “are so widely criticised and often mistrusted.” We take a look at how the government achieved its target of developing a daily testing capacity of

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27:48

Obeying lockdown, flight arrivals and is this wave of...

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2020/05/27

More than 35,000 people in the UK have now officially died from Covid-19, but what does the data show about whether this wave of the epidemic is waning? We ask who respects lockdown, who breaks it, and why?Our listeners are astounded by how many people allegedly flew into the UK in the first three months of the year - we’re on the story. We look at the performance of the Scottish health system on testing. And some pub-quiz joy involving a pencil.

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8:58

60 Harvests and statistically savvy parrots

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2020/05/23

A listener asks if there can really only be 60 harvests left in Earth's soil. Are we heading for an agricultural Armageddon? Plus we meet the parrots who are the first animals, outside humans and great apes, to be shown to understand probability.(image: Kea parrots in New Zealand)

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28:06

School re-opening, Germany’s Covid-19 success and...

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2020/05/20

Risk expert David Spiegelhalter discusses whether re-opening some schools could be dangerous for children or their teachers. We ask what’s behind Germany’s success in containing the number of deaths from Covid-19. Many governments across the world are borrowing huge sums to prop up their economies during this difficult time, but with everyone in the same boat who are they borrowing from? Plus we revisit the UK’s testing figures yet again and meet some statistically savvy parrots.

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9:09

Social Distancing and Government Borrowing

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2020/05/16

As lockdowns start to lift, many countries are relying on social distancing to continue to slow the spread of coronavirus. The UK says we should stay 2 metres apart, the World Health Organisation recommends 1 metre, Canada six feet. So where do these different measurements come from? Plus, governments around the world are trying to prop up their economies by borrowing money. But with everyone in the same situation, where are they borrrowing from?

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27:38

Vitamin D, explaining R and the 2 metre rule

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2020/05/13

R is one of the most important numbers of the pandemic. But what is it? And how is it estimated? We return to the topic of testing and ask again whether the governments numbers add up. As the government encourages those who can’t work at home to return to their workplaces - we’re relying on social distancing to continue to slow the spread of the virus. But where does the rule that people should stay 2 metres apart come from? And is Vitamin D an under-appreciated weapon in the fight against

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1,076 results

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