Could you be hit by a falling satellite?

More or Less: Behind the Stats

#Facts and Trivia #Science #BBC #BBC Radio 4 #Math #News Talk #News

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Can AI compress the years long research time of a PhD into seconds? Research scientist Max Jaderberg explores how “AI analogs” simulate real-world lab work with staggering speed and scale, unlocking new insights on protein folding and drug discovery. Drawing on his experience working on Isomorphic Labs' and Google DeepMind's AlphaFold 3 — an AI model for predicting the structure of molecules — Jaderberg explains how this new technology frees up researchers' time and resources to better understand the real, messy world and tackle the next frontiers of science, medicine and more. For a chance to give your own TED Talk, fill out the Idea Search Application: ted.com/ideasearch . Interested in learning more about upcoming TED events? Follow these links: TEDNext: ted.com/futureyou TEDAI Vienna: ted.com/ai-vienna Hosted on Acast. See acast.com/privacy for more information.…

about a year ago 9:55

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The number of satellites orbiting our planet has been rapidly increasing in recent years. But what are the risks when they start falling back down to earth?

The European Space agency estimate that by 2030 there will be 100,000 satellites in orbit. We look at whether that estimate is realistic and what it means for those of us living on the ground below, with the help of Jonathan McDowell and Fionagh Thomson. Presenter: Tim Harford Producer: Lizzy McNeill Series Producer: Tom Colls Production co-ordinator: Brenda Brown Editor: Richard Vadon Studio Manager: James Beard

1040 episodes

Could you be hit by a falling satellite?

More or Less: Behind the Stats

34,651 subscribers

published about a year ago

MP3•Episode home

The number of satellites orbiting our planet has been rapidly increasing in recent years. But what are the risks when they start falling back down to earth?

1040 episodes

#Facts and Trivia #Science #BBC #BBC Radio 4 #Math #News Talk #News

All episodes

1
Does a single AI query use a bottle of water? 8:58

4 days ago8:58

8:58

We’re living through boom-times for Artificial Intelligence, with more and more of us using AI assistants like ChatGPT, DeepSeek, Grok and Copilot to do basic research and writing tasks. But what is the environmental impact of these technologies? Many listeners have got in touch with More or Less to ask us to investigate various claims about the energy and water use of AI. One claim in particular has caught your attention - the idea that the equivalent of a small bottle of drinking water is consumed by computer processors every time you ask an AI a question, or get it to write a simple email. So, where does that claim come from, and is it true? Reporter: Paul Connolly Producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Donald McDonald Editor: Richard Vadon…

1
Are one in six children living through war? 8:58

11 days ago8:58

8:58

In the midst of the television coverage of Soccer Aid, a celebrity soccer match organised by Unicef, the audience was told that “one in six children around the world are currently living through war”. Listener Isla got in touch with More or Less to ask whether the claim was correct, so we tracked down the source to an organisation called the Peace Research Institute Oslo. Research director Siri Aas Rustad tells us how they worked out a figure for the number of children living near to a “conflict” and the big differences between that and something most people would think of as “war”. If you’ve seen a number you think we should look at, email the team on moreorless@bbc.co.uk Presenter: Lizzy McNeill Producer: Nicholas Barrett Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Giles Aspen Editor: Richard Vadon…

1
Why Manchester United can afford to play badly 8:58

18 days ago8:58

8:58

Manchester United are terrible, even according to their own manager. Last season saw their worst ever performance in Premier League history. But at the same time, according to Forbes magazine, they’re still the second most valuable football club in the world. How is that possible? Tim talks to Kieran Maguire, a football finance expert and the author of The Price of Football, to find out the secret of Manchester United’s financial success. Presenter: Tim Harford Producer: Nicholas Barrett Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Neil Churchill Editor: Richard Vadon…

1
Can drinking one less bottle of coke a day halve obesity? 26:40

21 days ago26:40

26:40

Tim Harford investigates some of the numbers in the news and in life. This week: Is the secret to halving obesity rates really just a matter of cutting back on one fizzy drink a day? How many new babies in the City of London have a foreign-born parent? And since fewer than one baby a week is actually born in the City of London, how much should we care? Electricity in the UK is more expensive than almost anywhere else. Why? And is it anything to do with wind turbines? And we help out rival Radio 4 programme Start the Week with a claim about churches. If you’ve seen a number in the news you think we should take a look at, email the team: moreorless@bbc.co.uk More or Less is produced in partnership with the Open University. Presenter: Tim Harford Reporter: Lizzy McNeill Producer: Nicholas Barrett and Nathan Gower Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound Mix: James Beard Editor: Richard Vadon Show less…

1
The economics of war: Vikings, Conquistadors and Vietnam 8:58

25 days ago8:58

8:58

How does economics help us understand conflicts through history? That’s the question that economist and journalist Duncan Weldon tries to answer in his new book, Blood and Treasure. Tim talks to Duncan about the economic perspective on Viking raiders, Spanish conquest and the Vietnam war. Presenter: Tim Harford Producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Neil Churchill Editor: Richard Vadon…

1
Is the UK seeing a Christian revival? 28:17

28 days ago28:17

28:17

Tim Harford looks at some of the numbers in the news and in life. This week: Is church-going making a comeback in the UK? Is it true that every day, 1000 people begin claiming personal independence payments, or PIP? When the government talks about how it “returns” illegal immigrants, what does it mean? Can a new telescope really see golf balls on the moon? If you’ve seen a number you think looks suspicious, email the More or Less team: moreorless@bbc.co.uk More or Less is produced in partnership with the Open University. Presenter: Tim Harford Producers: Lizzy McNeill, Nicholas Barrett, David Verry Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Gareth Jones Editor: Richard Vadon…

1
Has Russia suffered a million casualties in the Ukraine war? 8:59

5 weeks ago8:59

8:59

It’s been over three years since Russia’s full-scale invasion of Ukraine and the human toll is growing on both sides. Recently, politicians and journalists have declared a grim milestone, one million Russian casualties. But is this number accurate? Tim talks to Seth Jones, from the Center for Strategic and International Studies, and Olga Ivshina, from the BBC Russian service, to investigate this statistic. If you’ve seen a number in the news you think we should take a look at, email the More or Less team: moreorless@bbc.co.uk Presenter: Tim Harford Producer: Nicholas Barrett Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Gareth Jones Editor: Richard Vadon…

1
Why is data on grooming gangs so bad? 28:48

5 weeks ago28:48

28:48

Tim Harford looks at some of the numbers in the news and in life. In this episode: Why is the data on the ethnicity of grooming gangs of such poor quality? Iran has apparently enriched uranium to 60%, but what does that number mean? Adam Curtis’s latest series, Shifty, includes claims about Margaret Thatcher’s rise to power. We ask Sir John Curtice, polling king of election night, if they’re accurate. And we ask an economist to explain why being pillaged by a Viking might be more lucrative than you’d imagine. If you’ve seen a number in the news you think needs a stern look, email the team: moreorless@bbc.co.uk More or Less is produced in partnership with the Open University. Presenter: Tim Harford Reporter: Josephine Casserly Producers: Nicholas Barrett, Lizzy McNeill and David Verry Series producer: Tom Colls Production coordinator: Brenda Brown Sound Mix: Gareth Jones Editor: Richard Vadon…

1
How to spot a suspicious statistic 8:58

6 weeks ago8:58

8:58

Untruths sneak into our lives in all kinds of ways. Sometimes they’re outright lies. Blatant misinformation. But in this episode, we’re going to talk about something else - those sneaky numbers and claims that bounce around our society and that aren’t exactly false, but are leading you down the wrong path. That’s the subject of a book called May Contain Lies by Alex Edmans, a professor of finance at London Business School. Tim talks to Alex about the statistical claims that might not be wrong, but aren’t right either – and how to make sure you aren’t fooled by them yourself. Presenter: Tim Harford Producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Andrew Garratt Editor: Richard Vadon…

1
Are 4% of young women in the UK on OnlyFans? 28:49

6 weeks ago28:49

28:49

Tim Harford investigates some of the numbers in the news, and in life. This week: We debunk a false claim that the hotel bill for immigrants is the size of the tax bill for Manchester. An article in the Spectator claimed that 4% of women aged between 18 and 34 in the UK are OnlyFans creators. We track down the source and discover that it is not very good. Do people in Scotland use much more water than people in Yorkshire? If so, why? And we examine a popular claim that today’s working mothers spend more time with their children than your stereotypical 1950s housewife did. Make sure you get in touch if you’ve seen a number you think Tim and the team should take a look at. The email is moreorless@bbc.co.uk More or Less is produced in partnership with the Open University. Presenter: Tim Harford Reporter: Josephine Casserly Producers: Nicholas Barrett, Lizzy McNeill and David Verry Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: James Beard Editor: Richard Vadon…

1
Could you be hit by a falling satellite? 9:55

7 weeks ago9:55

9:55

The number of satellites orbiting our planet has been rapidly increasing in recent years. But what are the risks when they start falling back down to earth? The European Space agency estimate that by 2030 there will be 100,000 satellites in orbit. We look at whether that estimate is realistic and what it means for those of us living on the ground below, with the help of Jonathan McDowell and Fionagh Thomson. Presenter: Tim Harford Producer: Lizzy McNeill Series Producer: Tom Colls Production co-ordinator: Brenda Brown Editor: Richard Vadon Studio Manager: James Beard…

1
How do you make something 10-times more lethal? 28:28

7 weeks ago28:28

28:28

What does the government mean when it commits to developing a “10-times more lethal” army? Why was the much-missed Sycamore Gap tree said to be worth a strikingly exact £622,191? Are there really twice as many people teaching Yoga as there are in the fishing industry? Is the number of workers per pensioner really falling from 4 to 3 to 2? And what did Donald Trump mean when he said the price of eggs had fallen by 400%? Tim Harford investigates some of the numbers in the news. If you want us to look at a number you think looks a bit suspicious, email the team - moreorless@bbc.co.uk Please note an earlier edition of the programme incorrectly stated that the new EU-UK fishing agreement would last 4 years. The agreement length is 12 years. More or Less is produced in partnership with the Open University. Presenter: Tim Harford Reporter: Lizzy McNeill Producer: Nicholas Barrett Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Neil Churchill Editor: Richard Vadon…

1
Is the world’s population being miscounted? 8:58

8 weeks ago8:58

8:58

Exactly how many people live on our planet is one of those difficult-to-answer questions. The UN estimates is 8.2 billion, but that’s largely based on census data, which is certainly not a perfect measure. So when a recent study from Finland found that rural populations around the world had been underestimated by 50 to over 80%, the media got quite excited. This would be a big error - a 50% underestimate would mean the actual number of people in an area is double the number they thought there were. One newspaper in Spain - El Mundo - did its own sums and said this meant there were potentially 2 billion more people in the world than we currently think there are. But is it what the researchers in Finland actually meant? “Absolutely not,” says Josias Lang-Ritter, a researcher from University in Finland and a co-author of the study. Tim Harford speaks to Josias to figure out the right way of understanding the study. Presenter: Tim Harford Producer: Caroline Bayley Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Nigel Appleton Editor: Richard Vadon…

1
Does the average American have fewer than three friends? 28:48

8 weeks ago28:48

28:48

Tim Harford is here to sprinkle a refreshing shower of statistical insight over the parched lawns of misinformation. This week, we try to unpick the confusion over a claim made by London Mayor Sadiq Khan about the contribution skilled immigrants make to the nation’s finances. Mark Zuckerberg says that the average American has fewer than 3 friends. Is he right? Two doctors claim that up to 90% of Alzheimer’s disease can be prevented. Are they wrong? And Tim interviews an American, Catholic, philosopher of religion called Robert Prevost. Is he the pope? If you’ve seen a number in the news you think we should look at, email the team – moreorless@bbc.co.uk More or Less is produced in partnership with the Open University. Presenter: Tim Harford Reporter: Lizzy McNeill Producers: Nicholas Barrett and Nathan Gower Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Nigel Appleton Editor: Richard Vadon…

1
Factchecking the Trump administration’s Autism claims 9:14

9 weeks ago9:14