More or Less

Tim Harford examines the claim that NHS hospital patients are 45% more likely to die than US ones. Is Sir David Attenborough right that the world's population is increasingly out of control? And are 20% of the world's redheads in Scotland? Plus, the story of the Hawthorne Experiment, one of the most famous studies in industrial history.

'I accept every time I get in my car, there's a 20% chance I could die'. It's a line from the Formula 1 hit film, Rush. Spoken by racing driver Niki Lauda's character. Formula 1 was certainly a dangerous sport during the 1970s, but was it really that dangerous? Tim Harford and Hannah Barnes look at the data. Plus, is it true that it takes 1,000 years for a plastic bag to degrade? It's a popular cl...

All pupils at infant schools in England are to get free school lunches from next September, but does the evidence prove free dinners improve results? 'I accept every time I get in my car, there's a 20% chance I could die' - it's a line from the Formula 1 hit film, Rush, but was it really true for 1970s racing drivers? The government wants shops to start charging for plastic bags and the Deputy Pri...

Almost a quarter of men in some Asian countries admit rape, it has been reported. The headlines have been sparked by a UN report, which looks at violence against women in parts of Asia. Are the numbers of rapists really this high? Tim Harford and Ruth Alexander look into the detail of the study. And, “Africa has a drinking problem” - so says Time Magazine. More or Less discovers a more mixed pictu...

Psychologist Jean Twenge argues that women in their late thirties shouldn’t be as anxious about their prospects of having a baby as is commonly assumed. Tim Harford finds fertility experts agree. The economy’s turning a corner, the Chancellor says - Tim Harford takes a closer look at the numbers. Plus, sexual violence statistics in Asia; Britain’s ‘small island’ status rebutted; and does Africa re...

As global leaders remain divided on whether to carry out a military strike against Syria in response to the apparent use of chemical weapons against its people, Tim Harford looks at the different claims made about how many people have been killed. And, apparently, it's a fact that if there's one thing that's worse for you than drinking, scoffing bacon sandwiches and smoking 80 unfiltered cigarette...

Tim Harford looks at the different claims made about how many people have been killed in the apparent chemical attack in Syria. The cost of care has forced a million families to sell their homes in the past five years, it’s been reported – but is it true? What can statistics tell us about the safety of Super Puma helicopters? Tim finds out whether left-handers really die nine years earlier than ri...

Is it true that environmental problems will create 200 million migrants? Some politicians and environmentalists warn that this is the case. But migration experts say that the numbers are exaggerated. Tim Harford and Hannah Barnes investigate. This programme was first broadcast on the BBC World Service.

Has the government taken into account the worth of a badger's life in any cost-benefit analysis of the badger cull? It aims to kill 70% of badgers in the two cull zones, but Tim Harford discovers that such precision might be tricky. Plus, have blundering doctors and nurses really killed 13,000 patients in England? Shadow immigration minister Chris Bryant has warned that climate change is going to...

People who drink more than 4 cups of coffee increase their chances of dying by 50%, it was reported recently. Given everyone’s chance of dying is already 100%, this seems a puzzle. What does the research really say, and how reliable are the findings? Plus, Ruth Alexander interviews economist and Expecting Better author Emily Oster, who used her statistical training to assess the evidence for herse...

Tim Harford speaks to Persi Diaconis, top professor of maths and statistics and legendary magician. The Stanford University professor and co-author of the book "Magical Mathematics" has an enthralling story to tell of how he discovered magic as a boy, and then, as a consequence, a love of maths. And to illustrate how closely maths and magic are linked, Crossing Continents editor and the BBC's in-h...

If all the world’s population crowded together, where could we all fit? London? Texas? More or Less figures it out, and separates fact from fiction. And, as the soccer season returns, is it possible to measure the effectiveness of a team’s manager? We hear from David Sally, author of The Numbers Game. This programme was first broadcast on the BBC World Service.

This week we find out what the most visited country in the world is and ask why aren’t they capitalising financially as well as their rivals. Plus we also investigate the complex - and often controversial - web of international extradition treaties. The programme hears from extradition lawyer Anand Doobay, from Peters and Peters, and Ted Bromund, a senior research fellow in Anglo-American relation...

The winner of this year's Tour de France, British rider Chris Froome, faced numerous questions about doping during the course of his victory. More or Less assesses his performance stats, and asks whether maths can measure whether cycling really has cleaned up its act and whether Froome is simply a victim of the ghosts of cycling's past. Dr Ross Tucker from The Science of Sport website gives us his...

It’s claimed that Egyptians have taken part in the biggest uprising the world has ever seen. The nationwide demonstrations, which were followed by the removal of the president by the army, were certainly a massive show of people power. But were the crowds really as large as reported? Ruth Alexander assesses the evidence, and finds out why it is so difficult to count a crowd. This programme was fir...

The world of porn is often exaggerated but does it really make up 37% of the web? And after some high profile cases we ask whether the American football league has a crime problem? This edition was first broadcast on the BBC World Service.

Life expectancy at birth around the world has increased by six years in the past two decades. But can this striking trend continue? Ruth Alexander looks at the data. This edition was first broadcast on the BBC World Service.

Ruth Alexander examines US Secretary of State, John Kerry’s claim that 40% of the world’s workforce will be in Africa by 2050 and talks to the chief of the United Nations’ population division about its projections for 2050 and 2100. The programme also examines the final scene in The Fast and the Furious 6, the global box office sensation. How long must that runway have been at the end of the film?...

Ruth Alexander examines the claim that every 15 seconds a child dies of hunger. It’s a popular statistic used by celebrities and charity campaigners in support of the Enough Food for Everyone IF campaign. It conjures up the image of millions of young children starving to death. But is this really the case? This programme was first broadcast on the BBC World Service.

Parents take note – what can numbers reveal about bringing up children? Plus, Tim Harford explore if men really do think about sex every seven seconds. This urban myth will not go away and yet pinning down any evidence proves a challenge for the More or Less team.

A&E waiting times have been making the headlines - Tim Harford takes a look at some of the numbers and puts them into context. Today presenter Evan Davis explains his frustration with finding official statistics online. We explore if men really do think about sex every seven seconds. Plus, what are the chances of having twins?

In the wake of the Boston Marathon bombing and the killing of a British soldier on the streets of Woolwich in London, it emerged that the suspects were known to the security services. But how feasible is it for the authorities to keep track of everyone on their watch list? Tim Harford crunches the numbers, with the help of the former head of the UK intelligence service MI5, Dame Stella Rimington.

After the killing of a British soldier on the streets of Woolwich in London, it emerged that the suspects were known to the security services. But how feasible is it for the authorities to keep track of everyone on their watch list? Tim Harford crunches the numbers, with the help of the former head of MI5, Dame Stella Rimington. Plus: a listener requests a cost-benefit analysis of kidney donations...

Tim Harford examines Ryanair’s claim that more than 90% of its flights land on time; and discovers that millions of scientific papers may be incorrect. Producer: Ruth Alexander

Tim Harford inspects the claims the UK Treasury and the Scottish government make about the economics of an independent Scotland; tests Ryanair’s claim that more than 90% of its flights land on time; re-runs the Eurovision song contest, excluding the votes of the former Soviet countries to test whether political alliances are affecting the final results; discovers that millions of scientific papers...