The story of Theranos, a company that falsely claimed it could perform a full range of medical tests using just a tiny blood sample drawn by pricking your finger. Manuela Saragosa speaks to John Carreyrou, an investigative reporter with the Wall Street Journal and author of a book on the case, Bad Blood. Plus Silicon Valley venture capitalist Hemant Taneja explains why investors need to be more cautious.

(Photo: Blood samples, Credit: Getty Images)

Should Facebook and others be forced by governments to take responsibility for what people are exposed to on their platforms?

Social media companies' algorithms have come under particular scrutiny, with allegations that they push inappropriate content - such as neo-Nazi propaganda, self-harm videos and conspiracy theories - to its users, including to children. "Angry Aussie" YouTuber Andrew Kay describes how the video sharing platform shifted from being a site for video bloggers, to a place where contributors will do or say anything in order to get attention, and thereby earn money.

Meanwhile Professor Alan Woodward, a cyber security expert at the University of Surrey, tells Vishala Sri-Pathma what he thinks governments should be doing to rein these global digital behemoths in.

(Picture: Teenager looking at her smart phone in bed; Credit: Ljubaphoto/Getty Images)

Poor diet has been linked to diseases such as diabetes and cancer, but do you have much of a choice if you are on a tight budget?

Organic food is rising in popularity in the West, but Vishala Sri-Pathma asks nutritionist Sophie Medlin whether the additional cost of buying organic is actually worth it. And what if you are time poor, as well as short of money? Chef Tom Kerridge has tips for how even if you have just 20 minutes spare, it's still possible to pull together a healthy family meal.

Plus Dr Susan Babey, a senior research scientist for health policy at University College Los Angeles, explains another major factor affecting the diets of many ordinary Americans - so-called "food deserts" where there is simply nowhere to actually buy fresh produce.

(Picture: Fresh locally grown vine tomatoes for sale outside a green grocer store in the the UK; Credit: John Keeble/Getty Images)

How bogus stats can get repeated again and again until they end up influencing policy at governments and major multilateral institutions.

Ed Butler speaks to three people who claim they are struggling to slay these zombies. Ivan Macquisten is an adviser to the UK's Antiquities Dealers Association who actually wrote into Business Daily to complain about a previous programme that he claimed repeated false figures about the scale of looted archaeology from the Middle East finding its way into Western art markets.

Meanwhile, Kathryn Moeller of Stanford University describes how she never found the source of a claim widely quoted by international development agencies that girls are much more likely than boys to invest their income to the benefit of their household. And Rachel Kleinfeld of the Carnegie Endowment for International Peace explains the headache the UN faces in compiling international data about violent crime.

Also in the programme, Lazare Eloundou- Assomo of Unesco and the BBC's own Tim Harford.

Producer: Laurence Knight

(Photo: Zombie cosplayer; Credit: Albert L. Ortega/Getty Images)

Exporters express their fears and frustration at the lack of any agreement about future trade relations with just six weeks left to go until the UK leaves the EU.

Adam Sopher of popcorn manufacturer Joe & Sephs tells Ed Butler how he is now having to send his wares to Asia via air freight, because by the time the usual ships reach dock in Hong Kong the UK will have left already and he still doesn't know what tariffs he will have to pay. Pauline Bastidon of the Freight Transport Association describes how British road hauliers are having to take part in a lottery for permits to continue operating in the EU, with many being left empty handed.

Meanwhile in the Netherlands, MP Pieter Omtzigt, who acts as a Brexit point person for his country's parliament, explains how the Dutch have been preparing far longer than their British counterparts for the possibility of the UK crashing out of the EU with no trade deal at all. Plus Paul Hodges of the consultancy Ready for Brexit explains why so many of the small businesses he speaks to are far from being that.

(Picture: Frustrated businessman tearing at his hair; Credit: djedzura/Getty Images)

Are women finally breaking through off screen in the film industry? A year on from the Harvey Weinstein scandal, why aren't there more female movie directors at the Oscars?

Regan Morris reports from a Hollywood still coming to terms with the #MeToo movement. She speaks to Leah Meyerhof, founder of Film Fatales - a movement that brings together female film and TV directors on the West Coast - as well as directors Alyssa Downs and Rijaa Nadeem.

Meanwhile Nithya Raman of the Time’s Up campaign against sexual harassment explains why they have launched the "4% Challenge" - named after the derisory number of top-grossing films directed by women - as well as a legal defence fund and a mentorship programme for women.

Plus actors Armie Hammer and Felicity Jones talk about a forthcoming movie about the pioneering Supreme Court judge Ruth Bader Ginsburg, being directed by Mimi Leder.

(Picture: The 22 Oscars won by the Lord of The Rings ; Credit: Dean Treml/AFP/Getty Images)

Is the era of globalisation, unfettered markets and billionaire philanthropists drawing to a close? Is the answer to rising populism for the state to tax the wealthy and invest more in the public good?

Manuela Saragosa speaks to three people who say the populist revolts, from Brazil to the US, are symptomatic of an economic system in crisis. Winnie Byanyima, head of anti-poverty campaigners Oxfam, explains why she thinks global jobs statistics mask the reality that many people do not receive dignified work or a decent wage.

Development economist Paul Collier of Oxford University says he thinks corporations and billionaires have lost their way in an era of shareholder value and a growing wealth gap, while journalist Anand Giridharadas claims we are witnessing the death throes of the free market ideology that has dominated global politics since the 1980s.

(Picture: Anti-capitalist protestors demonstrate in Paris; Credit: Kiran Ridley/Getty Images)

Should your head trump your heart when seeking lifelong love? That's the challenge Business Daily's Justin Rowlatt has taken on for this Valentine's Day.

The hyper-rationalist businessman Ed Conard thinks he knows the answer, and his strictly mathematical strategy for romance is called "sequential selection, no turning back". He used it to meet his wife of the last 20 years, Jill Davis.

But is Ed's approach right for everyone? Justin hears sceptical voices from two very different quarters - romantic novelist Nicola Cornick, and Nobel prize-winning economist Alvin Roth. And what about Jill? What's it like to be on the receiving end of such a calculated courtship?

Producer: Laurence Knight

(Picture: Jill Davis and Ed Conard; Credit: Patrick McMullan via Getty Images)

Many African universities are not up to scratch, leaving African students vulnerable to scam institutions abroad. Ivana Davidovic reports from Northern Cyprus where many African students go looking for a better education. Nigerian businessman Evans Akanno explains the education problem at home, and Professor Tshilidzi Marwala, vice chancellor at the University of Johannesburg in South Africa, explains the scale of the problem.

(Photo: University students in Lagos, Nigeria, Credit: Getty Images)

Nigeria goes to the polls to elect a president this weekend. Two issues are prominent - the state of the economy and corruption. Local businessman Evans Akanno tells us why just getting the electricity to stay on would be a good start. Amy Jadesemi, CEO of the Lagos Deep Offshore Logistics Base, explains why global oil prices are still crucial to Nigeria. Benedict Crave, Nigeria analyst at the Economist Intelligence Unit, explains why challenger Atiku Abubakar might win the presidency.

(Photo: A woman walks past presidential campaign posters in Lagos, Nigeria, Credit: Getty Images)

Last month Dutch historian Rutger Bregman told the billionaires at the World Economic Forum in Davos they should think less about philanthropy and instead pay more tax. The clip of his speech went viral. He comes on the programme to argue his point with Ed Conard, a visiting scholar at the American Enterprise Institute and author of the book The Upside of Inequality, who says higher taxes just stop people innovating.

(Photo: Rutger Bregman, Credit: Getty Images)

Funereal solutions on an overcrowded planet - Ed Butler investigates what various countries do when they run out of space to bury their dead.

In Japan, where the construction of new crematoriums has often been blocked by unhappy neighbours, there is a literal multi-day backlog of bodies awaiting burial - and businesses ready to host them. In Greece, crematoriums are opposed by the Orthodox Church, so the solution has been the controversial practice of exhuming bodies just a few months after burial and transferring the decomposed remains to an ossuary.

Meanwhile in Los Angeles, mortician Caitlin Doughty tells Ed about an innovative new method of body disposal - disintegrate them in a solution of highly caustic potassium hydroxide.

(Picture: Grave-digger; Credit: David Turnley/Corbis/VCG via Getty Images)