More or Less: Behind the Stats

BBC

0.0 (0)
MATEMÁTICAS
CADA SEMANA

Tim Harford and the More or Less team try to make sense of the statistics which surround us. From BBC Radio 4

HACE 2 DÍAS

Do 11,000 sharks die every hour?

Hollywood has given sharks a terrible reputation. But in reality, the finned fish should be far more scared of us, than we of them. Millions of sharks are killed in fishing nets and lines every year. One statistical claim seems to sum up the scale of this slaughter – that 100 million sharks are killed every year, or roughly 11,000 per day. But how was this figure calculated, and what exactly does it mean? We go straight to the source and speak to the researcher who worked it out, Dr Boris Worm, a professor in marine conservation at Dalhousie University in Canada. Presenter: Lizzy McNeill Producer: Nicholas Barrett Series producer: Tom Colls Production coordinator: Brenda Brown Sound mix: Annie Gardiner Editor: Richard Vadon

9 min
30 AGO

Are self-driving cars safer than cars with drivers?

Fully autonomous cars are here. In a handful of cities across the US and China, robotaxis are transporting human passengers around town, but with no human behind the wheel. Loyal Listener Amberish wrote in to More or Less to ask about a couple of safety statistics he’d seen regarding these self-driving cars on social media. These claimed that Waymo self-driving taxis were five times safer than human drivers in the US, and that Tesla’s self-driving cars are 10 times safer. But, are these claims true? We speak to Mark MacCarthy, a Senior Fellow at the Brookings Institution Center for Technology Innovation, to find out. If you’ve seen some numbers you think we should look at, email the team: moreorless@bbc.co.uk Presenter: Lizzy McNeill Producer: Nicholas Barrett Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Neil Churchill Editor: Richard Vadon

9 min
23 AGO

Do women feel the cold more than men?

Are office temperatures set too low in the summer for women to be comfortable? This idea has featured in news headlines and comedy videos which describe the summer as a “women’s winter”. But is there evidence behind the claims of a gender bias in air conditioning? To find out, we speak to Gail Brager, Director of the Center for Environmental Design Research at UC Berkeley, and Boris Kingma, a senior researcher at TNO, the Netherlands Applied Research Institute. Presenter: Lizzy McNeill Producer: Nicholas Barrett Series producer: Tom Colls Production co-ordinator: Rosie Strawbridge Sound mix: James Beard Editor: Richard Vadon

9 min
16 AGO

How weird was the Med Sea heatwave?

In early July, the Mediterranean Sea experienced a marine heatwave. The surface of the water reached temperatures of 30 degrees in some places. A social media post at the time claimed that some of these sea temperatures were so different to the normal sea temperature at this time of year, that the sea was experiencing a “1-in-216,000,000,000-year sea temperature anomaly”. This would suggest that the likelihood of the event was on a timescale far longer than the amount of time the entire universe has existed. Is the claim true? Dr Jules Kajtar, a physical oceanographer from the National Oceanography Centre, takes a look at the statistics. We heard about this story because a listener spotted it and emailed the team. Get in touch if you’ve seen a number you think we should look at. moreorless@bbc.co.uk Presenter: Lizzy McNeill Series producer: Tom Colls Production co-ordinator: Rosie Strawbridge Sound mix: Neil Churchill Editor: Richard Vadon

9 min
9 AGO

Why it matters that Trump fired data chief

On Friday 1st August the US Bureau of Labor Statistics put out their job report data for August. It included revisions to their estimates for the jobs created in May and June which stated there were 258,000 fewer jobs than they had previously estimated. This news was not received well by the White House. President Trump fired the head of the bureau, Erika McEntarfer, calling the numbers ‘phony, rigged, a scam’ and spreading conspiracy theories that McEntarfer had fudged the data. We speak to economist Michael Strain from the American Enterprise Institute, to understand why the revisions happened and the potential consequences of throwing doubt on one of the US’s most important statistical agencies. If you’ve seen a number in the news you think we should take a look at, email the team: moreorless@bbc.co.uk Presenter: Lizzy McNeill Producer: Lizzy McNeill Series Producer: Tom Colls Production Co-ordinator: Rosie Strawbridge Sound mix: Neil Churchill Editor: Sam Bonham

9 min
6 AGO

Are abortion numbers rising in the US?

In June 2022 the United States Supreme Court passed what became known as ‘the Dobbs decision’. In doing so they overturned the long standing constitutional right for women to access abortion in the US. Since then a number of states have banned abortion completely with many others having highly prohibitive rules. You’d expect the numbers of abortions to go down. They haven’t. How is it possible that more people are accessing abortions in a post Dobbs society and why is it not true that states which have total bans have zero abortions per year? Presenter: Lizzy McNeill Producer: Lizzy McNeill Series Producer: Tom Colls Production Co-ordinator: Rosie Strawbridge Studio Manager: Neil Churchill Editor: Richard Vadon, Bridget Harney.

9 min
6 AGO

Does a single AI query use a bottle of water?

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

9 min
19 JUL

Are one in six children living through war?

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

9 min

Ver todo (1 k)

The Global News Podcast brings you the breaking news you need to hear, as it happens. Listen for the latest headlines and current affairs from around the world. Politics, economics, climate, business, technology, health – we cover it all with expert analysis and insight. Get the news that matters, delivered twice a day on weekdays and daily at weekends, plus special bonus episodes reacting to urgent breaking stories. Follow or subscribe now and never miss a moment. Get in touch: globalpodcast@bbc.co.uk

4.3 (3)

NOTICIAS DIARIAS
Professor Brian Cox and Robin Ince host a witty, irreverent look at the world through scientists’ eyes. Joined by a panel of scientists, experts and celebrity science enthusiasts they investigate life, the universe and everything in between on The Infinite Monkey Cage from the BBC. From the smallest building blocks of life to the furthest stars, the curious monkeys pull apart the latest science to reveal fascinating and often bizarre insights into the world around us and what lies beyond. Can trees talk to each other? Can science help you commit the perfect murder? What might aliens look like and the burning question of our time, are strawberries alive or dead? Join them as each episode they put a different scientific topic under the microscope, from aliens, black holes and hedgehogs, to bacteria, poison and the Big Bang. With past guests including actors Dame Judi Dench and Sir Patrick Stewart, comedians Steve Martin and Conan O’Brien, astronaut Tim Peake, primatologist Jane Goodall and mathematician Hannah Fry, The Infinite Monkey Cage promises to make you laugh, enrich your knowledge and leave you with a deeper appreciation for the universe that we call home. Whether you’re a seasoned scientist or someone who nodded off in physics class, listen in to learn all about funny, fascinating and sometimes ridiculous topics – with the occasional monkey business.

0.0 (0)

CIENCIA
The comedy podcast that takes history seriously. In each episode of You’re Dead to Me from BBC Radio 4, Greg Jenner is joined by a comedian and an expert historian to learn and laugh about the past. History isn’t just about dates and textbooks – it’s about extraordinary characters, amazing stories, and some very questionable fashion choices. How long did it take to build an Egyptian pyramid? What does the Bayeux Tapestry reveal about medieval life? Why did it take nearly half a millennium for Joan of Arc to become a saint? And was Catherine the Great really all that great? Whether you want to explore ancient landmarks like Stonehenge and Machu Picchu, dance through the history of Broadway and Bollywood, or find out how the Tudors rose to power, Greg and his guests promise to teach you something new that you won’t have heard in history lessons. Previous episodes of You’re Dead To Me have covered everything from royals to revolutionaries, actors to activists and divas to dictators. Take a stroll through the history of high-heeled shoes or get the scoop on the history of ice cream. Maybe you’d like to paint like the cave artists of the Palaeolithic era, work out like a Victorian bodybuilder, or fight like a Spartan? We’ve even hosted a special, live episode with the BBC Concert Orchestra to explore the dramatic life of Wolfgang Amadeus Mozart. Whatever your historical interests, Greg and his guests make even the trickiest topics easy to follow. Join them for a history lesson that’s as entertaining as it is enlightening - with no homework required.

0.0 (0)

HISTORIA
Spanning history, religion, culture, science and philosophy, In Our Time from BBC Radio 4 is essential listening for the intellectually curious. In each episode, host Melvyn Bragg and expert guests explore the characters, events and discoveries that have shaped our world. History fans can learn about pivotal wars and societal upheavals, such as the rise and fall of Napoleon, the Sack of Rome in 1527, and the political intrigue of the Russian Revolution. Those fascinated by the lives of kings and queens can journey to Versailles to meet Marie Antoinette and Louis XIV the Sun King, or to Ancient Egypt to meet Cleopatra and Nerfertiti. Or perhaps you’re looking to explore the history of religion, from Buddhism’s early teachings to the Protestant Reformation. If you’re interested in the stories behind iconic works of art, music and literature, dive in to discussions on the artistic genius of Michelangelo's Sistine Chapel and Van Gogh’s famous Sunflowers. From Gothic architecture to the works of Shakespeare, each episode of In Our Time offers new insight into humanity’s cultural achievements. Those looking to enrich their scientific knowledge can hear episodes on black holes, the Periodic Table, and classical theories of gravity, motion, evolution and relativity. Learn how the discovery of penicillin revolutionised medicine, and how the death of stars can lead to the formation of new planets. Lovers of philosophy will find episodes on the big issues that define existence, from free will and ethics, to liberty and justice. In what ways did celebrated philosophers such as Mary Wollstonecraft and Karl Marx push forward radical new ideas? How has the concept of karma evolved from the ancient Sanskrit texts of Hinduism to today? What was Plato’s concept of an ideal republic, and how did he explore this through the legend of the lost city of Atlantis? In Our Time celebrates the pursuit of knowledge and the enduring power of ideas.

0.0 (0)

HISTORIA
Investigating every aspect of the food we eat

0.0 (0)

GASTRONOMÍA
Hannah Fry and Dara Ó Briain tackle listeners' conundrums with the power of science!

0.0 (0)

CIENCIA