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

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 [email protected]

Presenter: Tim Harford

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.

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 - [email protected]

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

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

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 – [email protected]

More or Less is produced in partnership with the Open University.

Presenter: Tim Harford

Picking Robert F. Kennedy Jr., a known vaccine sceptic, as the Secretary for Public Health might not be the most ‘out there’ thing the Trump administration has done but it certainly raised some eyebrows.

Every two years, the UN release their predictions for the future population of humanity – currently expected to peak in the 2080s at around 10.3 billion people.

One of the things they use to work this out is the fertility rate, the number of children the average woman is expected to have in her lifetime. When this number falls below 2, the overall population eventually falls.

The collected data – that covers up to the present day – shows a fertility rate that’s falling fast. But the predicted rate for the future immediately levels out.

To explain what’s going on we speak to Patrick Gerland, who runs the population estimates team in the United Nations Population Division.

Presenter / producer: Tom Colls

In the early 2020s, a conspiracy theory started circulating online known as the “dead internet theory”.

This suggested that, instead of a vibrant digital super-community where people freely share things like cat videos and conspiracy theories, the internet was instead basically dead - an AI dystopia controlled by the deep state, where almost everything you see and interact with is generated by computers.

In this episode, we investigate one specific claim about the number of these bots on the internet - the idea that more than half of internet traffic is bots. Where does this claim come from, and is it true?

Presenter/producer: Tom Colls

Warren Buffett has announced he is stepping down as CEO of his company, Berkshire Hathaway.

Buffett is one of the richest people in the world, and is widely held up as the greatest investor who ever lived. He’s also been remarkably critical of other masters of the financial universe.

Tim Harford talks to Financial Times journalist Robin Wigglesworth, author of the book Trillions, about Buffett’s money making method, and how he used a massive bet to make a point about hedge funds.

Presenter: Tim Harford